JP6733861B2 - Component analysis system - Google Patents

Description

The present invention relates to a component analysis container and a component analysis system suitable for analyzing a plurality of components contained in one test solution in sample analysis.

For example, in the field of agriculture, analysis of soil components in the growing environment of crops is widely performed in order to manage the growing state of crops.

Generally, the soil analyzer injects each soil extract solution into multiple test tubes each time while measuring with a dropper with a scale, and then injects the reagents and diluents determined for each soil component into the test tubes. Inject and develop color. Then, measurement is performed by converting the color development state into a numerical value using a colorimetric table, a nephelometric table, an absorptiometric method, or the like.

However, in the above-mentioned measuring method, it is necessary to mix the reagents with the respective soil extract solutions, so that the number of repeated operations increases. Further, it is necessary to prepare a reagent according to the soil component to be measured, which is complicated.

By frequently performing soil analysis, detailed analysis for each field and analysis for each cropping can be performed, so that fertilization design can be performed in consideration of the influence of the previous crop. In addition, for crops with a long growing period, the timing and amount of additional fertilization can be optimized by conducting regular analysis in a shorter span. Therefore, by performing such soil analysis, it is possible to increase the yield and stabilize the quality.

However, it is difficult to increase the frequency of analysis due to the high complexity described above.

There are several measurement methods including such repetitive work and measurement methods for approaching a plurality of components from the same test solution, not limited to soil analysis. In recent years, in order to solve such complication, there has been proposed a method of mixing a test solution and a reagent and the like and analyzing the components by a simple method.

For example, Patent Document 1 discloses a reaction support (a container for component analysis) including a large number of containers for testing a liquid sample. 9A is a plan view showing an upper disk 100a constituting the reaction support 100 described in Patent Document 1, and FIG. 9B is a plan view showing a lower disk 100b constituting the reaction support 100. .. FIG. 10 is a cross-sectional view showing a part of the reaction support 100.

The reaction support 100 described in Patent Document 1 has a configuration in which an upper disc 100a shown in FIG. 9(a) and a lower disc 100b shown in FIG. 9(b) are laminated by adhesion. A plurality of liquid injection ports 103 are concentrically formed in the upper disc 100a. Each liquid injection port 103 communicates with the flow path 105a. On the lower disc 100b, a plurality of containers 104 corresponding to the respective liquid injection ports 103 formed on the upper disc 100a are concentrically formed. Each container 104 communicates with the flow path 105b.

As shown in FIG. 10, when the upper disc 100a and the lower disc 100b are overlapped with each other, the container 104 communicates with the liquid injection port 103 via the flow passage 105b of the lower disc 100b and the flow passage 105a of the upper disc 100a. doing. As a result, the liquid sample and the test reagent injected from the liquid injection port 103 are introduced into the container 104 via the flow paths 105a and 105b.

As described above, since the reaction support 100 described in Patent Document 1 includes the plurality of containers 104, a plurality of types of liquid samples can be simultaneously treated with the same reagent, or conversely, a plurality of types of liquid samples can be treated. It is possible to treat with the above reagents at the same time, and it is possible to greatly reduce the time and labor conventionally required.

JP 2012-185000 A (Published September 27, 2012)

However, the reaction support 100 disclosed in Patent Document 1 has a problem that the liquid sample easily overflows from the liquid injection port 103 during liquid injection.

Specifically, in the reaction support 100, the liquid sample injected from the liquid injection port 103 is introduced into the container 104 formed inside the reaction support 100. In order to introduce the liquid sample into the container 104, the air inside the container 104 must be discharged to the outside.

However, immediately after the liquid sample is dropped and injected from a position away from the liquid injection port 103, the injected liquid blocks the liquid injection port 103 (the cross section of the flow channel 105a). Therefore, when the liquid sample flows into the container 104, the path through which the air expelled from the container 104 is discharged to the outside is blocked, and the air is no longer discharged to the outside. As a result, the liquid sample does not smoothly flow into the container 104 from the liquid injection port 103, but the liquid sample overflows from the liquid injection port 103.

The present invention has been made in view of the above problems, and an object thereof is to prevent the liquid from overflowing from the liquid injection port, while allowing the liquid to smoothly flow into the measurement chamber from the liquid injection port. An object is to provide a container for analysis and a component analysis system.

In order to solve the above problems, the container for component analysis according to an aspect of the present invention includes a liquid injection port for injecting a liquid into a flow channel, and a measurement chamber communicating with the liquid injection port through the flow channel. And a partition wall separating the space so that the channel forms a plurality of branch channels, at least at the end of the channel on the liquid injection port side. ..

Further, in order to solve the above problems, the component analysis system according to an aspect of the present invention, the container for component analysis, the liquid injection port of the container for component analysis, a liquid from a predetermined height. And a liquid injection device for injecting the liquid by dropping the liquid.

According to one aspect of the present invention, it is possible to provide a component analysis container and a component analysis system capable of smoothly flowing the liquid from the liquid injection port into the measurement chamber while suppressing the liquid from overflowing from the liquid injection port. There is an effect that can be.

It is a figure which shows typically the schematic structure of the container for component analysis which concerns on Embodiment 1 of this invention, (a) is the front view which looked at the container for component analysis from above, (b) is A of (a). -A' is a cross-sectional view taken along the arrow. It is a perspective view of the container for component analysis of FIG. It is a perspective view which shows the structure of the component analysis system using the container for component analysis of FIG. It is a perspective view which shows the state which the liquid injection device of the component analysis system of FIG. 3 injects a liquid. It is a perspective view which decomposed|disassembled the container for component analysis of FIG. 1, (a) is a perspective view which shows the structure of the upper member of the container for component analysis, (b) shows the structure of the lower member of the container for component analysis. It is a perspective view. (A) And (b) is a disassembled perspective view which shows the structure of the analysis cell in the container for component analysis of FIG. It is sectional drawing which shows the structure of the analysis cell in the container for component analysis which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the analysis cell in the container for component analysis which concerns on Embodiment 3 of this invention. (A) is a plan view showing an upper disk constituting the reaction support described in Patent Document 1, and (b) is a plan view showing a lower disk constituting the reaction support. It is sectional drawing which shows a part of said reaction support body.

Hereinafter, a container for component analysis and a component analysis system of the present invention will be described with reference to the drawings.

[Embodiment 1]
(Component analysis container 1)
FIG. 1 is a diagram schematically showing an outline of a component analysis container 1 according to Embodiment 1 of the present invention, (a) is a front view of the component analysis container 1 seen from above, and (b) is a view thereof. It is an AA' arrow sectional drawing of (a). That is, FIG. 1B is a cross-sectional view in which the analysis cell 2 formed in the component analysis container 1 is radially cut. FIG. 2 is a perspective view of the component analysis container of FIG. 1.

As shown in FIGS. 1A and 2, the component analysis container 1 is composed of six analysis cells 2 and has a substantially disc-shaped structure as a whole. Each analysis cell 2 is formed in a fan shape around a virtual rotation axis 7. Each analysis cell 2 is partitioned as shown by the broken line in the figure, and is not in communication with each other. Although six analysis cells 2 are formed in the present embodiment, the number of analysis cells 2 is not limited.

A liquid injection port 3, a measurement window 6a, and a partition wall 9 are formed in each analysis cell 2. In the component analysis container 1, the liquid injection port 3 is formed on the inner peripheral side and the measurement window 6a is formed on the outer peripheral side. All the liquid injection ports 3 are formed on a first circle (on the same circle) around the rotation shaft 7. Similarly, all the measurement windows 6a are formed along the outer edge of the component analysis container 1 on the second circumference centered on the rotation axis 7.

A notch 1a is formed in the outer peripheral portion of the component analysis container 1, more specifically, in the boundary portion between adjacent analysis cells 2. The notch 1a functions as a positioning portion when setting the component analysis container 1 in the component analysis system described later. Details of the analysis cell 2 will be described later.

The material constituting the component analysis container 1 (analysis cell 2) is not particularly limited. In order to make the component analysis container 1 inexpensive, it is more preferable that the entire container be made of a highly transparent synthetic resin. In this embodiment, the component analysis container 1 is made of polycarbonate that also has chemical resistance.

In the following description, for convenience, the side on which the liquid injection port 3 is formed is the upper side (top surface or top surface) and the opposite side (back side of the component analysis container 1) is the lower side (bottom surface or bottom surface). Gravity acts on the component analysis container 1 from above to below.

As shown in FIG. 1B, the cross section of the portion of the component analysis container 1 where the measurement window 6a is formed has a hat shape, and a space is formed from the hat-shaped head portion to the flange portion. ing. As a result, the analysis cell 2 has a container shape. Specifically, the space inside the analysis cell 2 includes a liquid injection port 3 formed on the upper surface of the analysis cell 2 corresponding to the head, a measurement chamber 4 formed on the flange, and a liquid injection port 3. And a measurement chamber 4 are connected to each other by a flow path 5. Further, the partition wall 9 is formed at the end of the flow channel 5 on the liquid injection port 3 side, and the flow channel 5 forms a plurality of (two in the present embodiment) branch channels, which will be described later. The space in 5 is separated. As a result, one liquid injection port 3 is divided into two by the partition wall 9.

As described above, in the component analysis container 1, the plurality of liquid injection ports 3 are formed around the rotating shaft 7, and the measurement chamber 4 communicating with the liquid injection ports 3 through the flow path 5 is formed on the outer peripheral side. ..

The shape of the cross section of the component analysis container 1 is not limited to the hat shape, and may be another shape such as a cylindrical shape.

The liquid inlet 3 is an opening for introducing a test liquid (liquid) to be analyzed into the inside of the analysis cell 2. A reagent 10 that reacts with a predetermined component of a plurality of components contained in the test liquid is enclosed in each measurement chamber 4. The flow path 5 is formed with an inclined surface 5 a that descends from the liquid injection port 3 toward the measurement chamber 4 in the outer peripheral direction. The inclined surface 5a is formed up to the inner wall surface on the center side (rotating shaft 7 side) of the component analysis container 1. That is, the component analysis container 1 is configured to have a step 21 between the measurement chamber 4 and the flow path 5, the step 21 being lowered on the measurement chamber 4 side (downward to the outer peripheral side). Thereby, the test liquid introduced from the liquid injection port 3 is guided to the measurement chamber 4 along the inclined surface 5a.

The inclined surface 5a may be formed from the liquid injection port 3 to the bottom surface of the measurement chamber 4. That is, the height of the inclined surface 5a may be gradually reduced from the liquid injection port 3 toward the outer peripheral direction of the analysis cell 2 in which the measurement chamber 4 is formed. Even with such a configuration, the test liquid introduced from the liquid injection port 3 is guided to the measurement chamber 4 along the inclined surface 5a.

The reagent 10 in each measurement chamber 4 reacts with the component of the test liquid to be measured in each analysis cell 2. The reagent 10 may be arbitrarily set according to the component of the test liquid to be analyzed and is not particularly limited. For example, as a reagent 10 for examining the concentration of Mg component in soil analysis, “xylidyl blue+Triton X-100+triethanolamine+sodium sulfate+GEDTA+tetraethylenepentamine+disodium hydrogen phosphate+sodium hydroxide solution” And the like. When analyzing other components of the test liquid, a commercially available reagent 10 corresponding to the component or the developed reagent 10 can be used. In addition, it is preferable that the reagent 10 is as solid as possible and has little change with time from the viewpoint of storability.

A measurement window 6a is provided on the upper surface of the measurement chamber 4 of each analysis cell 2 and a measurement window 6b is provided on the lower surface thereof. The measurement windows 6a and 6b are provided on the upper surface and the lower surface of the analysis cell 2 so as to overlap each other. As described later, the component analysis container 1 analyzes the test liquid based on the light transmitted from the measurement window 6a to the measurement window 6b. Therefore, the measurement windows 6a and 6b are formed of a light transmissive material. For example, the measurement windows 6a and 6b are preferably made of a transparent plastic material such as silicone, glass, polycarbonate or acrylic. When the component analysis container 1 is made of a light transmissive material (particularly a transparent material), it is not necessary to separately provide the measurement windows 6a and 6b. In the component analysis container 1, at least the measurement windows 6a and 6b may be formed of a light transmissive material.

A plurality of ribs 8 are formed on the bottom surface of the measurement chamber 4 of each analysis cell 2. The rib 8 is formed in order to promote mixing and stirring of the test liquid and the reagent 10. As a result, the analysis time can be shortened and the analysis accuracy can be improved.

The shape of the rib 8 is not particularly limited. For example, in the configuration of FIG. 1B, the rib 8 is a hemispherical protrusion formed on the bottom surface of the measurement chamber 4. The rib 8 may be a plate-shaped (columnar) protrusion formed from the inner side surface of the measurement chamber 4 toward the inside. The ribs 8 may be provided not only on the bottom surface of the measurement chamber 4 but also on each of the inner surfaces such as the top surface and the inner surface. Further, it is preferable that the rib 8 is formed so as to avoid the space between the measurement windows 6a and 6b which is an optical path at the time of measuring the absorbance. As a result, the rib 8 does not hinder the absorbance measurement. Therefore, it is possible to improve the analysis accuracy while promoting the mixing and stirring of the test liquid and the reagent 10 to shorten the analysis time.

(Configuration of component analysis system 20)
Next, the configuration of the component analysis system 20 using the component analysis container 1 will be described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view showing the configuration of a component analysis system 20 using the component analysis container 1 of FIG. FIG. 4 is a perspective view showing a state where the liquid injection device 24 of the component analysis system 20 of FIG. 3 injects a liquid.

The component analysis system 20 rotates the component analysis container 1 about the rotation shaft 7 to stir and mix the test liquid (liquid sample) in the measurement chamber 4 and the reagent 10. Furthermore, the component analysis system 20 also has a function of measuring the optical characteristics of the test liquid and analyzing the components in the test liquid.

As shown in FIG. 3, the component analysis system 20 includes a component analysis container 1, a table 22, a drive mechanism 23, and an optical measurement mechanism 27. Further, as shown in FIG. 4, the component analysis system 20 also includes a liquid injection device 24.

The table 22 is for mounting the component analysis container 1. The table 22 has a disk-shaped structure that is slightly larger than the component analysis container 1. The table 22 is supported by being arranged on the crown of the drive mechanism 23. On the outer edge of the surface of the table 22 on which the component analysis container 1 is placed, a protrusion (not shown) is provided upright. This protrusion is provided so as to correspond to the notch 1a formed on the outer peripheral portion of the component analysis container 1. Accordingly, by engaging the notch 1 a of the component analysis container 1 with the protrusion of the table 22, the component analysis container 1 can be set at an appropriate position on the table 22.

The drive mechanism 23 rotationally drives the table 22 according to an instruction from a control unit (not shown) of the component analysis system 20. As an example, the drive mechanism 23 can be configured by a pulse controllable stepping motor.

The liquid injection device 24 injects the test liquid into the component analysis container 1. Specifically, as shown in FIG. 4, the liquid injection device 24 causes the test liquid to drop from a predetermined height with respect to the liquid injection port 3 of the component analysis container 1, so that the liquid of the analysis cell 2 is discharged. The test solution is injected into the measuring chamber 4 through the inlet 3. As described above, in the component analysis container 1, the partition wall 9 is formed at the end of the flow path 5 on the liquid injection port 3 side. Therefore, the partition wall 9 also divides the liquid injection port 3 into two. The liquid injection device 24 injects the test liquid into one of the two liquid injection ports 3. As a result, the test liquid flows into the measurement chamber 4 via the branch channel 5b (see FIG. 5 described later) connected to the liquid injection port 3 into which the test liquid is injected.

The liquid injecting device 24 may inject the test liquid into the liquid injecting ports 3 of the respective analysis cells 2 sequentially and individually, or may inject the test liquid into the liquid injecting ports 3 of all the analysis cells 2 at the same time. The operator may manually inject this test liquid into each liquid injection port 3.

The optical measurement mechanism 27 measures the optical characteristics of the test liquid stirred in the measurement chamber 4 of the component analysis container 1 and analyzes the components in the test liquid. As an example, the optical measurement mechanism 27 measures the components of the test liquid by the absorptiometry method. The optical measuring mechanism 27 includes a light emitting unit 25 and a light receiving unit 26.

The light emitting section 25 irradiates any one of the analysis cells 2 of the component analysis container 1 set on the table 22 which is rotationally driven. The light emitting unit 25 is arranged so as to be located above any one of the analysis cells 2 of the component analysis container 1 set on the rotary driven table 22. Then, the light emitting unit 25 irradiates the measurement window 6a on the top surface side of the analysis cell 2 arranged below with light.

The light receiving unit 26 receives the light emitted from the light emitting unit 25 to the measurement window 6a on the top surface and transmitted through the measurement chamber 4 and the measurement window 6b on the bottom surface, and the spectrum of the received light is used as data, which is not illustrated. It is output to a control unit or the like. The control unit obtains the measurement result of the component of the test liquid in the measurement chamber 4 based on the spectrum data acquired from the light receiving unit 26. The light receiving unit 26 is arranged below the light emitting unit 25.

As described above, in the component analysis system 20, when the component analysis container 1 is set on the table 22, a part of the table 22 and the component analysis container 1 is disposed between the light receiving unit 26 and the light emitting unit 25. Will be done. Further, the component analysis system 20 rotates the component analysis container 1 about the rotation shaft 7 to move the reagent 10 enclosed in the measurement chamber 4 and the liquid injection device 24 from the liquid injection port 3 to the measurement chamber 4. Stir with the injected test solution.

(Analysis of test liquid using the component analysis container 1)
Next, an analysis method using the component analysis container 1 will be described based on FIGS. 1 to 4.

The component analysis container 1 is set in the component analysis system 20 for analysis. First, a test liquid to be analyzed is injected from each liquid injection port 3. As described above, the flow path 5 of each analysis cell 2 has the inclined surface 5a whose height decreases from the inner peripheral side toward the outer peripheral side. As a result, the test liquid injected from the liquid injection port 3 is introduced into the measurement chamber 4 along the inclined surface 5a. For this reason, the injected test liquid is smoothly introduced into the measurement chamber 4 without accumulating in the vicinity immediately below the liquid injection port 3.

Next, the component analysis container 1 in which the test liquid is introduced into the measurement chamber 4 is rotated around the rotation shaft 7. For example, after the introduction of the test liquid, the component analysis container 1 is rotationally driven around the rotation shaft 7 by the rotation mechanism (not shown) of the analysis device. As a result, centrifugal force is applied to the component analysis container 1, and the test liquid introduced into the measurement chamber 4 and the reagent 10 previously stored in the measurement chamber 4 are mixed and stirred. The component analysis container 1 is rotated until the test liquid and the reagent 10 sufficiently react with each other.

The test liquid and the reagent 10 may be agitated by rotating the component analysis container 1 in one direction around the rotating shaft 7 at a constant speed and agitating it, or by rotating it with acceleration and deceleration. The aspect which does is good. Alternatively, the mode may be such that the stirring is performed by alternately rotating in one direction and the opposite direction.

The inclined surface 5a has an upward slope from the measurement chamber 4 toward the liquid injection port 3. Therefore, even if centrifugal force is applied during rotation of the component analysis container 1, the injected test liquid is prevented from flowing back from the measurement chamber 4 to the liquid injection port 3, and the injected test liquid is stored in the component analysis container 1 It can be prevented from scattering to the outside.

Next, component analysis is carried out by optical measurement of the mixed liquid of the reacted test liquid and reagent 10. For example, the drive mechanism 23 measures the absorbance of the light transmitted through the measurement chamber 4 of the component analysis container 1 rotating around the rotation axis 7. Specifically, the light emitted from the light emitting unit 25 of the component analysis system 20 is transmitted through the measurement window 6a, the measurement chamber 4, and the measurement window 6b in this order, and the transmitted light is incident on the light receiving unit 26 of the component analysis system 20. Let Then, the absorbance (transmittance) of the mixed liquid is measured based on the intensity of the light received by the light receiving unit 26 (amount of transmitted light). As a result, it becomes possible to analyze the components of the test liquid based on the measurement result of the absorbance.

In this way, in the component analysis container 1, the flow path 5 is formed with the inclined surface 5 a having a downward slope from the liquid injection port 3 toward the measurement chamber 4. The inclined surface 5a has a structure that assists the introduction of the test liquid from the liquid inlet 3 into the measurement chamber 4 and prevents the test liquid from backflowing and scattering when the test liquid and the reagent 10 are stirred. Therefore, the component analysis container 1 suitable for mechanization and automation of analysis can be provided.

Furthermore, since the component analysis container 1 is composed of a plurality of analysis cells 2, it is possible to perform a plurality of analyzes simultaneously in one component analysis container 1. Therefore, the analysis time can be shortened.

Further, in the component analysis container 1, all the measurement windows 6a and all the measurement windows 6b are provided on the same circumference with the rotation shaft 7 as the center. With this, by rotating the component analysis container 1, the measurement of the six analysis cells 2 can be performed by one optical measurement system.

(Characteristic configuration of component analysis container 1 (analysis cell 2))
As described above, in the component analysis container 1, the test liquid (liquid) injected from the liquid injection port 3 is supplied to the measurement chamber 4 formed inside the component analysis container 1 via the flow path 5. To be done.

Generally, when the test liquid is caused to flow into the flow channel 5, the test liquid has a property of stably flowing along the bottom surface and the side surface of the flow channel 5 due to its surface tension and viscosity. In such a stable state, the cross section of the flow channel 5 is divided into a layer in which the test liquid flows and an air layer, unless the amount of the test liquid flowing into the flow channel 5 is excessive. On the other hand, the measurement chamber 4 is a space formed inside the component analysis container 1 and communicates with the liquid injection port 3 through the flow path 5. There is air. Therefore, when the test liquid is injected from the liquid injection port 3, the liquid flows into the measurement chamber 4 through the flow path 5, and the air in the measurement chamber 4 is expelled. The air expelled from the measurement chamber 4 is discharged to the outside from the liquid injection port 3 through the air layer formed in the flow path 5. As a result, the test liquid smoothly flows into the measurement chamber 4.

However, as shown in FIG. 4, the liquid injection device 24 is configured to drop the test liquid vigorously like a waterfall and inject it from a position distant from the liquid injection port 3 to some extent. Therefore, immediately after the test liquid is injected from the liquid injection port 3, the injected test liquid blocks the cross section of the flow path 5, and the cross section of the flow path 5 is divided into a liquid flow layer and an air layer. It is not stable. As a result, when the test liquid flows into the measurement chamber 4, the air expelled from the measurement chamber 4 will not be discharged to the outside. Therefore, there is a problem that the test liquid does not smoothly flow into the measurement chamber 4 from the liquid injection port 3 and the test liquid overflows from the liquid injection port 3. In particular, when the component analysis container 1 is used for soil analysis, the amount of the test liquid injected from the liquid injection port 3 is very large because the powder reagent is dissolved during the soil analysis. Therefore, this problem is likely to occur.

Therefore, the component analysis container 1 of the present embodiment is provided with a partition wall 9 at the end of the flow path 5 on the liquid injection port side (see FIGS. 1 and 2). 5 is an exploded perspective view of the component analysis container 1 of FIG. 1, (a) is a perspective view showing a configuration of an upper member 1A of the component analysis container 1, and (b) is a component analysis container. It is a perspective view showing the composition of the lower member 1B of No. 1. 6A and 6B are exploded perspective views showing the configuration of the analysis cell 2 in the component analysis container 1 of FIG. 1.

As shown in (a) and (b) of FIG. 5 and (a) and (b) of FIG. 6, the component analysis container 1 (analysis cell 2) includes an upper member 1A and a lower member 1B that are divided into upper and lower parts. It consists of

As shown in FIGS. 5A and 5B and FIG. 6A, the liquid injection port 3 and the measurement window 6a are formed in the upper member 1A. The measurement chamber 4, the flow path 5, the inclined surface 5a, the measurement window 6b (not shown in FIG. 5B), and the partition wall 9 are formed in the lower member 1B.

As shown in FIG. 6B, the upper member 1A is provided with the liquid injection port 3, the flow path 5, the inclined surface 5a, the measurement window 6a, and the partition wall 9, and the lower member 1B. The measurement chamber 4 and the measurement window 6b may be formed.

As shown in FIG. 5B, the partition wall 9 is formed at the end of the flow path 5 on the liquid injection port 3 side so that the flow path 5 forms two branch flow paths 5b and 5b. The space of the flow path 5 is separated. The number of the branch channels 5b formed by the partition walls 9 is not limited to two, and three or more branch channels 5b may be formed.

As a result, when the liquid is injected into one of the two branch channels 5b, 5b, the test liquid flows into the measurement chamber 4 via the branch channel 5b. On the other hand, as the test liquid flows into the measurement chamber 4, the air expelled from the measurement chamber 4 is discharged to the outside via the other branch flow path 5b. Therefore, the liquid can smoothly flow into the measurement chamber 4 from the liquid injection port 3.

Further, even if the test liquid blocks one branch flow channel 5b for injecting the test liquid, the air in the measurement chamber 4 can be expelled to the outside from the other branch flow channel 5b. Therefore, it is possible to prevent the test liquid from overflowing from the liquid injection port 3.

As described above, according to the component analysis container 1 of the present embodiment, it is possible to smoothly flow the liquid from the liquid injection port 3 into the measurement chamber 4 while suppressing the test liquid from overflowing from the liquid injection port 3. it can.

In addition, in the component analysis container 1 of the present embodiment, the number of the flow paths 5 communicating with the measurement chamber 4 is one, and one flow path 5 is divided into two branch flow paths 5b and 5b by the partition wall 9. .. However, it is conceivable to form the flow path for supplying the test liquid to the measurement chamber 4 and the flow path for expelling the air in the measurement chamber 4 independently of each other. However, in this case, since it is necessary to provide two flow paths communicating with the measurement chamber 4 to the outside, the structure of the component analysis container 1 becomes complicated. As a result, there arises a problem that the manufacturing cost is increased and the design is restricted.

On the other hand, the component analysis container 1 of the present embodiment has a simple configuration in which the partition wall 9 is provided in one flow path 5 that communicates with the liquid injection port 3 and the measurement chamber 4. Therefore, it is possible to reduce problems (increase in manufacturing cost, design restrictions) that occur when two independent flow paths are provided.

Further, as shown in FIGS. 1 and 5B, the partition wall 9 may be formed at least at the end of the flow path 5 on the liquid injection port 3 side. In the present embodiment, the partition wall 9 is interrupted in the middle of the flow path 5 from the end on the liquid injection port 3 side to the end on the measurement chamber 4 side. Therefore, the two branch channels 5b and 5b join together in the middle of the channel 5 from the end on the liquid injection port 3 side to the end on the measurement chamber 4 side.

In such a configuration, since the partition wall 9 is interrupted in the middle of the flow path 5, the partition wall 9 does not reduce the cross-sectional area of the flow path 5 in the portion where the partition wall 9 is absent. For example, when the widths of the flow paths 5 are equal, the cross-sectional area of the flow path 5 where the partition wall 9 does not exist is larger than the cross-sectional area of the flow path 5 where the partition wall 9 exists. Therefore, it is possible to allow the test liquid to flow into the measurement chamber 4 more smoothly while suppressing an increase in the flow path resistance due to the presence of the partition wall 9 to the minimum.

When the partition wall 9 is interrupted in the middle of the flow channel 5, the test liquid flows along the wall surface of the branch flow channel 5b by flowing the test liquid through one branch flow channel 5b at a sufficient distance. For this reason, even if the partition wall 9 is interrupted in the middle of the flow path 5, the branch flow path 5b through which the test liquid flows is in a stable state divided into a layer through which the test liquid flows and an air layer. Therefore, even if the branch channels 5b and 5b are merged in this state, the test liquid can be flowed into the measurement chamber 4 without any problem.

Further, the partition wall 9 is not interrupted in the middle of the flow channel 5 from the liquid injection port 3 side end to the measurement chamber 4 side end, and the flow channel 5 is measured from the liquid injection port 3 side end to the measurement chamber 4 side. The side end may be formed, or the step 21 or the measurement chamber 4 may be formed.

Further, in the present embodiment, since the partition wall 9 divides the flow path 5 into two equal parts to form two branch flow paths 5b and 5b, the widths (horizontal widths) of the branch flow paths 5b and 5b are the same. There is. However, the widths of the branch channels 5b and 5b may be non-uniform. For example, the partition wall 9 is preferably formed such that the width of the branch channel 5b for injecting the liquid is wide and the width of the branch channel 5b for expelling the air in the measurement chamber 4 is narrow. As a result, it is possible to increase the inflow amount of the test liquid into the diversion channel 5b for liquid injection. Therefore, the test liquid can be allowed to flow into the measurement chamber 4 while surely preventing the test liquid from overflowing from the liquid injection port 3.

Further, in the component analysis container 1 of the present embodiment, an inclined surface 5a that descends from the liquid injection port 3 toward the measurement chamber 4 is formed at the end of the flow path 5 on the liquid injection port 3 side. As a result, the test liquid injected into the flow path 5 flows along the inclined surface 5a (bottom surface of the flow path 5) according to gravity. As a result, in the vicinity of the liquid injection port 3 (upstream side of the flow path 5), the inclined surface 5a acts in such a direction that the cross section of the flow path 5 is easily separated into a liquid flow layer and an air layer. On the other hand, in the vicinity of the measurement chamber 4 (downstream side of the flow path 5), the inclined surface 5a acts in a direction in which the test liquid easily flows toward the measurement chamber 4 smoothly.

However, in the vicinity of the liquid injection port 3, the test liquid falling from above the liquid injection port 3 by the liquid injection device 24 vigorously collides with the inclined surface 5a. As a result, the colliding test liquid may spread in the width direction of the flow channel 5, and the test liquid may block the cross section of the flow channel 5.

However, as described above, the component analysis container 1 of this embodiment includes the partition wall 9. Therefore, even if the test liquid spreads in the width direction of the one branch flow path 5b, the spread is blocked by the partition wall 9. However, since the test liquid is not injected into the other branch channel 5b for expelling the air in the measurement chamber 4 with the injection of the test liquid, it is ensured that the air is expelled. Therefore, even when the flow path 5 has the inclined surface 5a, the test liquid can be flowed into the measurement chamber 4 while more reliably preventing the test liquid from overflowing from the liquid injection port 3.

Further, in the component analysis container 1 of the present embodiment, the inclined surface 5a is formed up to the inner wall surface of the measurement chamber 4 on the center side (rotating shaft 7 side). Therefore, even if the test liquid (or the mixed liquid with the reagent 10) in the measurement chamber 4 tries to flow toward the flow path 5, the step 21 serves as a barrier. As a result, it is possible to effectively prevent the test liquid from flowing backward when the component analysis container 1 is accelerated at the start of rotation or decelerated at the time of stop of rotation. Further, it is possible to effectively prevent the backflowing test liquid from scattering from the liquid inlet 3.

Further, as shown in FIG. 5B, in the component analysis container 1 (analysis cell 2) of the present embodiment, the liquid injection port 3 is on the center side and the measurement chamber 4 is on the outer peripheral side, Reference numeral 5 has a fan shape in which the lateral width is widened toward the outer peripheral side.

In such a configuration, the flow path 5 has a cross-sectional area on the downstream side of the flow path 5 that is on the way from the end on the liquid injection port 3 side of the flow path 5 to the end on the measurement chamber 4 side. Will have a portion that is wider than the cross-sectional area on the upstream side of.

Here, generally, the volume flow rate (V) of the liquid (test liquid) flowing in the flow path 5 per unit time is represented by the product of the cross-sectional area (S) of the flowing liquid and the flow velocity (v) (V=S). Xv). As described above, since the partition wall 9 is provided in the flow path 5 of the component analysis container 1, the cross-sectional area of the flow path 5 is smaller than that in the case where the partition wall 9 is not provided, and the flow path 5 (the branch flow path 5b). Also, the cross-sectional area (S) of the liquid flowing in () is smaller than that in the case without the partition wall 9. As a result, the volume flow rate (V) of the liquid is limited by the partition wall 9.

However, in the configuration as shown in FIG. 5B, the cross-sectional area on the downstream side of the flow path 5 where the flow velocity of the test liquid is relatively slower is larger than the cross-sectional area on the upstream side of the flow path 5. Exists in the middle of the flow path 5. This allows more test liquid to flow to the downstream side. Therefore, it is possible to more reliably prevent the test solution injected from the liquid injection port 3 from overflowing.

Further, in the configuration as shown in FIG. 5B, the cross-sectional area of the flow channel 5 gradually increases from the upstream side of the flow channel 5 toward the downstream side. That is, the lateral width of the flow path 5 (division flow path 5b) becomes wider as it goes from the upstream side to the downstream side. In other words, the cross-sectional area of the flow path 5 becomes wider toward the downstream side of the flow path 5 where the flow velocity of the test liquid becomes relatively slow. This allows a large amount of test liquid to flow even on the downstream side of the flow path 5. Therefore, it is possible to more reliably prevent the test solution injected from the liquid injection port 3 from overflowing.

Further, in the component analysis container 1, the measurement chamber 4 is formed on the outer peripheral side of the liquid injection port 3. As a result, when centrifugal force acts on the test liquid in the measurement chamber 4 due to the rotational movement of the component analysis container 1, the inner wall surface on the outer peripheral side of the measurement chamber 4 plays a role of supporting the test liquid. Therefore, even if centrifugal force is applied when the component analysis container 1 is rotated, the injected test liquid is prevented from flowing back from the measurement chamber 4 to the liquid injection port 3, and the injected test liquid is stored in the component analysis container 1. It can be prevented from scattering to the outside.

Further, in the component analysis container 1, the measurement window 6a formed on the upper surface of the measurement chamber 4 is provided at a position lower than the region of the upper surface where the measurement window 6a is not formed (see FIGS. 1 and 2). ). Further, the height (vertical length) of the measurement chamber 4 in the region where the measurement window 6a is formed is also lower (shorter) than the height of the measurement chamber 4 in the region where the measurement window 6a is not formed. There is. As a result, the liquid level of the test liquid in the measurement chamber 4 comes to exist above the measurement window 6a. Therefore, foreign matter such as bubbles does not exist in the measurement region between the measurement windows 6a and 6b, and the measurement liquid is always filled with the test liquid. Therefore, the accuracy of analysis can be improved. Further, the bubbles generated by the mixture of the test liquid and the reagent 10 can be easily trapped in the space between the upper surface region where the measurement window 6a is not formed and the liquid surface of the test liquid. Therefore, it becomes possible to more reliably fill the measurement area with the test liquid.

5 and 6, the component analysis container 1 is formed of two members (the upper member 1A and the lower member 1B), but the upper member 1A and the lower member 1B are integrated. Good.

[Embodiment 2]
Another embodiment of the present invention will be described below with reference to FIG. 7. For convenience of description, members having the same functions as the members described in the above embodiment will be designated by the same reference numerals, and the description thereof will be omitted. FIG. 7 is a cross-sectional view showing the configuration of the analysis cell 2 in the component analysis container 1 according to the second embodiment of the present invention. The cross-sectional view of FIG. 7 shows a cross-sectional view of the same portion as FIG. 1A, but the partition wall 9 is omitted.

As shown in FIG. 7, the component analysis container 1 of the present embodiment is different from the first embodiment in that the bottom surface (inclined surface 5 a) of the flow path 5 has hydrophilicity. Specifically, in the analysis cell 2 of the present embodiment, at least the inclined surface 5a (more specifically, the inclined surface of the diversion channel 5b through which the test liquid flows) has to be hydrophilic. In the analysis cell 2 of FIG. 7, in addition to the entire area of the inclined surface 5a, the inner wall surface of the measurement chamber 4 on the inner peripheral side and the step 21 at the boundary between the flow path 5 and the measurement chamber 4 are hydrophilic. The hydrophilic region 11 has. Although not shown, the partition wall 9 may also have hydrophilicity.

The method of imparting hydrophilicity to the area such as the bottom surface of the flow path 5 is not particularly limited. For example, the component analysis container 1 can be rendered hydrophilic by a hydrophilic treatment. Specifically, hydrophilicity can be imparted by forming a structure having an oxygen functional group on the surface by plasma treatment or corona discharge treatment. The hydrophilicity can also be imparted by changing the roughness of the rough surface with respect to the area by blasting so that the surface shape is different. Furthermore, the nano-imprinting method can also impart hydrophilicity by forming a nanoscale fine structure on the surface to which hydrophilicity has been imparted.

As described above, in the component analysis container 1 of the present embodiment, at least the bottom surface (inclined surface 5a) of the flow path 5 (division flow path 5b) through which the test liquid flows has hydrophilicity. As a result, the test liquid smoothly flows toward the measurement chamber 4. Therefore, it is possible to more reliably prevent the test solution injected from the liquid injection port 3 from overflowing.

[Embodiment 3]
Another embodiment of the present invention is described below with reference to FIG. For convenience of description, members having the same functions as the members described in the above embodiment will be designated by the same reference numerals, and the description thereof will be omitted. FIG. 8 is a sectional view showing the configuration of the analysis cell 2 in the component analysis container 1 according to the third embodiment of the present invention. The sectional view of FIG. 8 shows the same portion as that of FIG. 7, but the partition wall 9 is omitted.

In the component analysis container 1 of the second embodiment, the entire area of the inclined surface 5a is hydrophilic, and the inner wall surface of the measurement chamber 4 on the inner peripheral side and the boundary between the flow path 5 and the measurement chamber 4 are formed. The step 21 of the part was also hydrophilic.

On the other hand, in the component analysis container 1 of the present embodiment, the bottom surface (inclined surface 5a) of the channel 5 has a hydrophobic region 11a having hydrophobicity, and the measurement chamber connected to the channel 5 (inclined surface 5a). 4 has an inner wall surface and a step 21 with a hydrophilic region 11b having hydrophilicity. In other words, the hydrophilicity of the bottom surface (inclined surface 5a) of the flow channel 5 is relatively low (hydrophobicity is relatively high), and the hydrophilicity of the inner wall surface of the measurement chamber 4 and the step 21 is relatively high (hydrophobicity). Is relatively low). Although not shown, the partition wall 9 may also have hydrophobicity.

In the present embodiment, the hydrophilic treatment described in the second embodiment is applied to the region where the hydrophilicity is desired to be relatively increased, so that the region is rendered hydrophilic. As a result, the hydrophilicity of the other regions becomes relatively low and the hydrophobicity becomes relatively high.

Specifically, for example, in the lower member 1B shown in FIG. 5B, the shunt channels 5b and 5b (inclined surface 5a) formed in the inner peripheral portion and the partition wall 9 are made more hydrophobic. In this case, the regions of the branch channels 5b and 5b (the inclined surface 5a) and the partition wall 9 are masked in advance with a cap or the like, and then plasma treatment is performed as the hydrophilic treatment described in the second embodiment. As a result, only the unmasked area is subjected to the hydrophilic treatment, so that the hydrophobicity of the masked area can be relatively increased.

Further, in order to increase the hydrophobicity more positively, it is possible to increase the hydrophobicity of the area by performing fluorine coating on the area where the hydrophobicity is desired to be increased. Further, instead of coating the region whose hydrophobicity is desired to be increased with fluorine, a coating agent may be applied to the region or a fluorine plasma treatment may be performed to increase the hydrophobicity of the region. Incidentally, when performing the fluorine plasma treatment, contrary to the above description, in the lower member 1B shown in FIG. 5B, the region in which the measurement chamber 4 is formed in the outer peripheral portion is masked in advance to divide the flow. The hydrophobicity of the regions of the paths 5b and 5b (slope 5a) and the partition wall 9 can be increased.

Alternatively, by providing a fine periodic structure of nanometer level in the regions of the branch channels 5b and 5b (the inclined surface 5a) and the partition wall 9, the hydrophobicity of the region can be enhanced. For example, laser microfabrication may be applied to the regions of the branch channels 5b and 5b (inclined surface 5a) and the partition wall 9, or the mold for molding the component analysis container 1 may be prefabricated beforehand to have its structure during molding. May be adopted.

As described above, in the component analysis container 1 of the present embodiment, the bottom surface (inclined surface 5a) of the channel 5 (division channel 5b) has hydrophobicity, and the inner wall surface of the measurement chamber 4 connected to the channel 5 is And the step 21 has hydrophilicity. That is, the inner wall surface of the measurement chamber 4 and the step 21 are more hydrophilic than the bottom surface (the inclined surface 5a) of the flow path 5 (diversion flow path 5b). Therefore, the test liquid in the measurement chamber 4 can be suppressed from flowing back along the flow path 5.

[Summary]
In the component analysis container 1 according to the first aspect of the present invention, a liquid injection port 3 for injecting a liquid into a flow channel 5 and a measurement chamber 4 communicating with the liquid injection port 3 through the flow channel 5 are formed. In the component analysis container 1, a partition wall 9 is provided at least at the end of the flow path 5 on the liquid injection port 3 side so as to separate the space so that the flow path 5 forms a plurality of branch flow paths 5b. ..

According to the above configuration, the partition wall is formed at the liquid injection port side end of the flow channel, and the partition wall divides the flow channel into a plurality of branch channels. Accordingly, when the liquid is injected into one of the plurality of branch channels, the liquid flows into the measurement chamber via the branch channel. On the other hand, as the liquid flows into the measurement chamber 4, the air expelled from the measurement chamber 4 is discharged to the outside via a branch passage other than the branch passage into which the liquid is injected. Therefore, the liquid can be smoothly flowed into the measurement chamber from the liquid inlet.

Furthermore, since the air in the measurement chamber is discharged to the outside from the branch channels other than the branch channel into which the liquid is injected, even if the liquid immediately after the liquid injection blocks the branch channel into which the liquid is injected, the liquid injection port It is possible to prevent the liquid from overflowing.

As described above, according to the above configuration, it is possible to prevent the liquid from leaking from the liquid injection port while allowing the liquid to smoothly flow into the measurement chamber from the liquid injection port.

In the component analysis container 1 according to the second aspect of the present invention, in the first aspect, the flow path 5 descends from the liquid injection port 3 toward the measurement chamber 4 at least at the end on the liquid injection port 3 side. It may be configured to have the inclined surface 5a.

According to the above configuration, the inclined surface that descends toward the measurement chamber is formed at the liquid injection port side end of the flow path. As a result, the liquid injected from the liquid injection port smoothly flows along the inclined surface toward the measurement chamber. Therefore, it is possible to more reliably prevent the liquid injected from the liquid injection port from overflowing.

The container 1 for component analysis according to aspect 3 of the present invention is the container 1 for analysis according to aspect 1 or 2, wherein the partition wall 9 extends from the end of the flow path 5 on the liquid injection port 3 side to the end of the measurement chamber 4 side. , The plurality of branch channels 5b and 5b merge into one on the way from the end of the flow channel 5 on the liquid injection port 3 side to the end of the measurement chamber 4 side. It may have a configuration.

According to the above configuration, since the partition wall is interrupted in the middle of the flow path, the partition wall does not reduce the cross-sectional area of the flow path in the portion without the partition wall. For example, when the widths of the flow paths are equal, the cross-sectional area of the flow path in the part where the partition wall does not exist becomes larger than the cross-sectional area of the flow path in the part where the partition wall exists. Therefore, the liquid can be caused to flow into the measurement chamber more smoothly while suppressing an increase in the flow path resistance due to the presence of the partition wall.

In the component analysis container 1 according to aspect 4 of the present invention, in any one of aspects 1 to 3, the flow path 5 is located from the end of the flow path 5 on the liquid injection port 3 side to the measurement chamber 4 side. It may be configured to have a portion in which the cross-sectional area on the downstream side of the flow path 5 is larger than the cross-sectional area on the upstream side of the flow path 5 on the way to the end.

In general, the volumetric flow rate (V) of a liquid flowing through a flow path in a unit time is represented by the product of a cross-sectional area (S) of the flowing liquid and a flow velocity (v) (V=S×v).

According to the above configuration, a portion in which the cross-sectional area on the downstream side of the flow channel where the flow velocity of the liquid becomes relatively slower than the cross-sectional area on the upstream side of the flow channel exists in the middle of the flow channel. This allows more liquid to flow to the downstream side. Therefore, it is possible to more reliably prevent the liquid injected from the liquid injection port from overflowing.

In the component analysis container 1 according to Aspect 5 of the present invention, in any one of Aspects 1 to 4, the cross-sectional area of the flow channel 5 is gradually increased from the upstream side to the downstream side of the flow channel 5. The configuration may be wider.

According to the above configuration, the cross-sectional area of the flow channel becomes wider toward the downstream side of the flow channel where the flow velocity of the liquid becomes relatively slow. This allows a large amount of liquid to flow even on the downstream side of the flow path. Therefore, it is possible to more reliably prevent the liquid injected from the liquid injection port from overflowing.

In the component analysis container according to aspect 6 of the present invention, in any one of aspects 1 to 5, the measurement chamber 4 may be formed on the outer peripheral side of the liquid injection port 3.

According to the above configuration, the measurement chamber is formed on the outer peripheral side of the liquid injection port. Thus, when a centrifugal force acts on the liquid in the measurement chamber due to the rotational movement of the component analysis container, the inner wall surface on the outer peripheral side of the measurement chamber plays a role of supporting the liquid. Therefore, even if centrifugal force is applied during rotation of the component analysis container, the injected liquid is prevented from flowing back from the measurement chamber to the liquid injection port, and the injected liquid is prevented from scattering outside the component analysis container. Can be prevented.

In the component analysis container 1 according to aspect 7 of the present invention, in any one of aspects 1 to 6 described above, the bottom surface of the flow path 5 may be hydrophilic.

According to the above configuration, the bottom surface of the flow path through which the liquid flows has hydrophilicity. As a result, the liquid smoothly flows toward the measurement chamber. Therefore, it is possible to more reliably prevent the liquid injected from the liquid injection port from overflowing.

In the component analysis container 1 according to aspect 8 of the present invention, in any one of the aspects 1 to 7, the bottom surface of the flow path 5 has hydrophobicity, and the measurement chamber 4 connected to the flow path 5 is provided. The inner wall surface may be hydrophilic.

According to the above configuration, the bottom surface of the channel has hydrophobicity, and the inner wall surface of the measurement chamber connected to the channel has hydrophilicity. That is, the inner wall surface of the measurement chamber is more hydrophilic than the bottom surface of the flow path. Therefore, the liquid in the measurement chamber can be prevented from flowing backward along the flow path.

In addition to the bottom surface of the flow channel, the inner wall surface of the measurement chamber connected to the bottom surface of the flow channel preferably has hydrophilicity. As a result, the region from the liquid injection port to the inside of the measurement chamber becomes hydrophilic. Therefore, the liquid can be caused to flow into the measurement chamber more smoothly.

A component analysis system 20 according to Aspect 9 of the present invention is a liquid from a predetermined height with respect to the component analysis container 1 of any of Aspects 1 to 8 and the liquid injection port 3 of the component analysis container 1. And a liquid injection device 24 for injecting the liquid by dropping the liquid.

According to the above configuration, since the component analysis container according to the present invention and the liquid injection device for injecting the liquid into the liquid injection port of the component analysis container are provided, the liquid smoothly flows from the liquid injection port into the measurement chamber. It is possible to provide a component analysis system capable of flowing in.

In the component analysis system 20 according to Aspect 10 of the present invention, in the above Aspect 9, the liquid injection device 24 is configured to inject the liquid into one of the plurality of branch channels 5b, 5b. It may be.

According to the above configuration, the liquid injection device injects the liquid into one of the branch channels formed by the partition wall. As a result, the liquid flows into the measurement chamber through the branch channel into which the liquid has been injected. Further, the air expelled from the measurement chamber as the liquid flows into the measurement chamber is discharged to the outside through another branch flow path. Therefore, it is possible to prevent the liquid from overflowing from the liquid injection port.

DESCRIPTION OF SYMBOLS 1 Container for component analysis 2 Analysis cell 3 Liquid injection port 4 Measuring chamber 5 Flow path 5a Sloping surface 7 Rotating shaft 10 Reagent 20 Component analysis system 21 Step 24 Liquid injection device

Claims (8)

A component analysis system for analyzing components of a test solution,
A liquid injection port for injecting a liquid into the flow channel, and a component analysis container in which a measurement chamber communicating with the liquid flow port through the flow channel is formed,
The component analysis container is placed, and the component analysis container is provided with a table for rotating about the rotation axis set in the component analysis container,
The component analysis container, at least at the end of the flow channel on the liquid injection port side, is provided with a partition wall that separates the space so that the flow channel forms a plurality of branch channels.
The measurement chamber is formed on the outer peripheral side of the liquid injection port about the rotation axis, and a projection formed toward the inside of the measurement chamber is provided on the inner surface of the measurement chamber. and,
The component analysis system is characterized in that the cross-sectional area of the flow channel gradually increases from the upstream side to the downstream side of the flow channel . The component analysis system according to claim 1, wherein the flow path has an inclined surface that descends from the liquid injection port toward the measurement chamber at least at an end on the liquid injection port side. The partition wall is interrupted on the way from the liquid injection port side end of the flow path to the measurement chamber side end,
The plurality of branch channels merge into one in the middle of an end portion of the flow channel on the liquid injection port side to an end portion of the measurement chamber side. Component analysis system. The flow channel, in the middle from the liquid injection port side end of the flow channel to the measurement chamber side end, the cross-sectional area of the downstream side of the flow channel is the cross-sectional area of the upstream side of the flow channel. The component analysis system according to any one of claims 1 to 3, wherein the component analysis system has a portion wider than the above. Bottom surface of the flow path, component analysis system according to any one of claims 1 to 4, characterized in that it has a hydrophilic. The bottom surface of the flow path has a hydrophobic, component analysis according to any one of claims 1 to 5, the inner wall surface of the measuring chamber connected to the flow path and having a hydrophilic system. The liquid inlet of the component analysis vessel, in any one of claims 1 to 6, characterized in that it comprises a liquid injection device for injecting the liquid by dropping the liquid from a predetermined height Described component analysis system. The component analysis system according to claim 7 , wherein the liquid injection device injects the liquid into one of the plurality of branch channels.

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