CN112161942A - Liquid quality on-line testing method - Google Patents
Liquid quality on-line testing method Download PDFInfo
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- CN112161942A CN112161942A CN202010939157.6A CN202010939157A CN112161942A CN 112161942 A CN112161942 A CN 112161942A CN 202010939157 A CN202010939157 A CN 202010939157A CN 112161942 A CN112161942 A CN 112161942A
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- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title abstract description 20
- 238000001228 spectrum Methods 0.000 claims abstract description 42
- 230000007704 transition Effects 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 15
- 238000010998 test method Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000000862 absorption spectrum Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000000295 emission spectrum Methods 0.000 claims description 6
- 230000002269 spontaneous effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000002189 fluorescence spectrum Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000000284 extract Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 5
- 238000010183 spectrum analysis Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a liquid quality on-line testing method which comprises the following steps: the metering and sampling unit samples a sample and a reagent with preset dosage to the integrating sphere vessel at a first preset speed until the liquid level in the integrating sphere vessel is higher than the joint of the transition tube and the expansion tube of the integrating sphere vessel; the metering and sampling unit reversely extracts a mixed sample with preset dosage from the integrating sphere vessel so that the liquid level in the integrating sphere vessel is lower than the joint of the sphere cavity of the integrating sphere vessel and the transition pipe; the metering and sampling unit re-samples the reversely extracted mixed sample to the integrating sphere vessel at a second preset speed until the liquid level of the mixed sample in the integrating sphere vessel is higher than the joint of the transition tube and the expansion tube of the integrating sphere vessel, and a small section of the mixed sample is reserved in the sample inlet tube outside the integrating sphere vessel; the second preset speed is less than the first preset speed; the light detection unit measures the characteristic spectrum to be observed emitted by the integrating sphere. The test result shows that the light detection stability can be improved from the original 0.35% to 0.05% by the invention.
Description
Technical Field
The invention relates to an optical integrating sphere-based liquid quality online test method, which comprises the field of liquid quality online test by adopting spectral analysis methods such as absorption spectrum, fluorescence spectrum, scattering spectrum and spontaneous emission spectrum, and is particularly suitable for the field of liquid quality online test with strict requirements on sensitivity and detection limit.
Background
With the development of on-line testing methods and instruments, higher and higher requirements are put forward on the "measurement sensitivity", "measurement stability", "detection limit or quantitative lower limit" and "maintenance period and cost" of the on-line testing instruments. The current on-line test method which can better meet all the requirements is a spectral analysis method based on an optical integrating sphere, and the essence of improving the sensitivity and reducing the detection limit is to collect all characteristic spectra generated in the integrating sphere for subsequent measurement.
Due to the limitation of the self-construction characteristics and the online test conditions of the optical integrating sphere, if the conventional optical vessel is simply replaced by the optical integrating sphere to construct the online test instrument based on the spectral analysis method, and the conventional test method is still adopted in the test method, the stability of the optical inspection is very poor, and the original purpose of adopting the optical integrating sphere cannot be achieved at all.
In principle the less diffuse reflective surface area the optical integrating sphere loses, the better its integrating effect. In order to pursue the light integration, the aperture of the upper and lower end openings (for automatic sample introduction) of the integrating sphere is usually selected to be smaller. Thus, the lower branch pipe connected with the lower opening of the integrating sphere can form a large-section hollow column (formed by friction force of the inner wall of the branch pipe and surface tension of the liquid level) due to normal speed sample injection, namely, a liquid-gas interface can be formed under the lower opening of the lower end of the integrating sphere. Light escaping from the integrating sphere through the opening is reflected at the interface, so that part of the escaping light is reflected back into the integrating sphere. Because the position of the interface is different in each measurement, the light reflected back into the integrating sphere is relatively random, so that a large random error of light detection is generated, and the measurement stability of the instrument is affected. Similarly, the normal sampling speed can also lead to a large hollow column formed in the upper branch pipe connected with the opening at the upper end of the integrating sphere, or the open pore on the integrating sphere is close to the bubble on one side of the integrating sphere, thereby seriously affecting the stability of the optical detection.
Disclosure of Invention
The invention aims to provide an innovative technical thought and scheme for an optical integrating sphere-based liquid quality online testing instrument, which comprises a liquid quality online testing instrument adopting spectral analysis methods such as absorption spectrum, fluorescence spectrum, scattering spectrum and spontaneous emission spectrum, and particularly relates to the field of liquid quality online testing with strict requirements on sensitivity and detection limit.
The technical scheme of the invention is as follows: an online liquid testing method includes but is not limited to the following steps:
s100, a metering and sampling unit 2 samples a sample and a reagent with preset dosage to an integrating sphere vessel 1 at a first preset speed until the liquid level in the integrating sphere vessel 1 is higher than the joint of a transition pipe 13 and an expansion pipe 14 of the integrating sphere vessel 1;
s200, reversely extracting a mixed sample with preset dosage from the integrating sphere vessel 1 by the metering and sampling unit 2, so that the liquid level in the integrating sphere vessel 1 is lower than the joint of the sphere cavity 11 of the integrating sphere vessel 1 and the transition pipe 13;
s300, the metering and sampling unit 2 re-samples the reversely extracted mixed sample to the integrating sphere vessel 1 at a second preset speed until the liquid level of the mixed sample in the integrating sphere vessel 1 is higher than the joint of the transition pipe 13 and the expansion pipe 14 of the integrating sphere vessel 1, and a small section of the mixed sample is left in the sample inlet pipe 3 outside the integrating sphere vessel 1; the second preset speed is less than the first preset speed;
s400, the light detection unit measures 4 the characteristic spectrum to be observed, which is emitted by the integrating sphere dish 1.
The device related to the method consists of an integrating sphere vessel 1, a metering and sample feeding unit 2, a sample feeding pipe 3 and a light detection unit 4; the two ends of the sample inlet pipe 3 are respectively connected with the integrating sphere vessel 1 and the metering and sample inlet unit 2; the metering and sampling unit 2 is used for sampling a sample and a reagent with preset dosage into the integrating sphere vessel 1, or is also used for reversely extracting a mixed sample with preset dosage from the integrating sphere vessel 1; the integrating sphere vessel 1 is used for providing a reaction field and collecting a characteristic spectrum to be observed generated after a mixed sample in the integrating sphere vessel 1 reacts; the light detection unit 4 is used for measuring the characteristic spectrum to be observed collected by the integrating sphere dish 1.
The integrating sphere vessel 1 is composed of a sphere cavity 11, a branch pipe 12, a transition pipe 13 and an expansion pipe 14; the upper end of the branch pipe 12 is communicated with the lower end of the ball cavity 11, the upper end of the ball cavity 11 is communicated with the lower end of the transition pipe 13, and the upper end of the transition pipe 13 is communicated with the lower end of the expansion pipe 14; the spherical cavity 11 is an optical integrating sphere and is used for collecting a characteristic spectrum to be observed generated after the reaction of the mixed sample in the spherical cavity 11 so as to be used for the measurement of the optical detection unit 4; the line diameter of the branch pipe 12 is smaller than that of the spherical cavity 11, and the line diameter of the transition pipe 13 is smaller than that of the spherical cavity 11, so that the loss of the diffuse reflection area of the spherical cavity 11 is reduced; the linear diameter of the transition pipe 13 is larger than that of the branch pipe 12, and the function is that no air bubble is mixed at the joint of the spherical cavity 11 and the transition pipe 13 after the sample introduction is finished at the first preset speed; the linear diameter of the expansion pipe 14 is larger than that of the transition pipe 13, and the functions of buffering sample introduction and preventing continuous bubbling action in the sample introduction process from causing liquid in the integrating sphere container 1 to climb out of the integrating sphere container 1 along the inner wall of the transition pipe 13 are achieved.
In the second embodiment of the present application, the sphere cavity 11 of the integrating sphere dish 1 is provided with an incident light window 111 and a characteristic spectrum exit window 112, a connection line between the incident light window 111 and the sphere center of the sphere cavity 11 is orthogonal to a connection line between the characteristic spectrum exit window 112 and the sphere center of the sphere cavity 11, and the optical inspection unit 4 can measure a characteristic absorption spectrum to be observed through the characteristic spectrum exit window 112.
In another embodiment of the present application, on the basis of the second embodiment, the sphere cavity 11 of the integrating sphere dish 1 is further provided with an incident light escape window 113, the sphere center of the sphere cavity 11 and the incident light window 111 are on the same straight line, and the light inspection unit 4 can measure a characteristic fluorescence spectrum or a scattering spectrum to be observed through the characteristic spectrum exit window 112.
In another embodiment of the present application, based on the second embodiment, the sphere cavity 11 of the integrating sphere dish 1 only retains the characteristic spectrum exit window 112, and the light inspection unit 4 can measure the spontaneous emission spectrum to be observed through the characteristic spectrum exit window 112 by removing the incident light window 111.
The invention has the following effects:
the light detection stability of the liquid quality on-line testing instrument based on the optical integrating sphere can be improved to 0.05% from the original 0.35%, the sensitivity of the instrument is effectively improved, and the detection limit of the instrument is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention.
FIG. 1 is a schematic flow chart of an online liquid testing method;
FIG. 2 is a basic block diagram of an apparatus involved in an online liquid quality testing method;
FIG. 3 is an integrating sphere cuvette configuration for measuring characteristic absorption spectra;
FIG. 4 is an integrating sphere cell configuration for measuring characteristic fluorescence or scattering spectra;
FIG. 5 is an integrating sphere cuvette configuration for measuring a characteristic spontaneous emission spectrum.
The reference numbers illustrate:
1-integrating sphere vessel; 11-a ball cavity; 111 — incident light window; 112-a characteristic spectrum exit window; 113 — incident light escape window; 12-branch pipe; 13-a transition duct; 14-a flash pipe; 2-a metering and sample introduction unit; 3, a sample inlet pipe; 4-light detection unit.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
The embodiment provides an online liquid testing method, which includes, but is not limited to, the following steps (as shown in fig. 1):
s100, a metering and sampling unit 2 samples a sample and a reagent with preset dosage to an integrating sphere vessel 1 at a first preset speed until the liquid level in the integrating sphere vessel 1 is higher than the joint of a transition pipe 13 and a dilatation pipe 14 of the integrating sphere vessel 1;
s200, reversely extracting a mixed sample with preset dosage from the integrating sphere vessel 1 by the metering and sampling unit 2, so that the liquid level in the integrating sphere vessel 1 is lower than the joint of the sphere cavity 11 of the integrating sphere vessel 1 and the transition pipe 13;
s300, re-injecting the reversely extracted mixed sample to the integrating sphere vessel 1 by the metering and sampling unit 2 at a second preset speed until the liquid level of the mixed sample in the integrating sphere vessel 1 is higher than the joint of the transition pipe 13 and the expansion pipe 14 of the integrating sphere vessel 1, and leaving a small section of mixed sample in the sample injection pipe 3 outside the integrating sphere vessel 1; the second preset speed is less than the first preset speed;
s400, the light detection unit 4 measures the characteristic spectrum to be observed emitted by the integrating sphere dish 1.
The device for realizing the testing method mainly comprises an integrating sphere vessel 1, a metering and sampling unit 2, a sampling tube 3 and a light detection unit 4 (as shown in figure 2): the two ends of the sample inlet pipe 3 are respectively connected with the integrating sphere vessel 1 and the metering and sample inlet unit 2; the metering and sampling unit 2 is used for sampling a sample and a reagent with preset dosage into the integrating sphere vessel 1, or is also used for reversely extracting a mixed sample with preset dosage from the integrating sphere vessel 1; the integrating sphere vessel 1 is used for providing a reaction field and collecting a characteristic spectrum to be observed generated after the reaction of the mixed sample in the integrating sphere vessel 1; the light detection unit 4 is used for measuring the characteristic spectrum to be observed collected by the integrating sphere dish 1.
The integrating sphere vessel 1 related to the device mainly comprises a sphere cavity 11, a branch pipe 12, a transition pipe 13 and an expansion pipe 14 (as shown in fig. 2): the upper end of the branch pipe 12 is communicated with the lower end of the ball cavity 11, the upper end of the ball cavity 11 is communicated with the lower end of the transition pipe 13, and the upper end of the transition pipe 13 is communicated with the lower end of the expansion pipe 14; the spherical cavity 11 is an optical integrating sphere and is used for collecting the characteristic spectrum to be observed generated after the reaction of the mixed sample in the spherical cavity 11 so as to be measured by the optical detection unit 4; the line diameter of the branch pipe 12 is smaller than that of the spherical cavity 11, and the line diameter of the transition pipe 13 is smaller than that of the spherical cavity 11, so that the loss of the diffuse reflection area of the spherical cavity 11 is reduced; the linear diameter of the transition pipe 13 is larger than that of the branch pipe 12, and the function is that no bubble is mixed at the joint of the ball cavity 11 and the transition pipe 13 after the sample introduction is finished at the first preset speed; the line diameter of the expansion pipe 14 is larger than that of the transition pipe 13, and the functions of sample introduction buffering and prevention of continuous bubbling action in the sample introduction process cause liquid in the integrating sphere vessel 1 to climb out of the integrating sphere vessel 1 along the inner wall of the transition pipe 13.
Therefore, the liquid in the ball cavity 11, the branch pipe 12 and the transition pipe 13 before the light detection is ensured to be continuous, no air bubble or air column is mixed, namely, no inconstant liquid-gas interface exists, and the stability of the light detection is ensured strongly.
Specifically, the testing method provided by this embodiment can improve the light detection stability of the liquid quality online testing instrument based on the optical integrating sphere from 0.35% to 0.05%.
It should be understood that the sample and the reagent described in the embodiments of the present application, after being mixed in the sphere cavity 11 of the integrating sphere dish 1, become the mixed sample described in the embodiments of the present application; in the embodiments of the present application, the descriptions related to the sample, the reagent and the mixture are provided for strictly explaining the states of these liquid substances.
Example two
Referring to fig. 3, an incident light window 111 and a characteristic spectrum exit window 112 are disposed on the sphere cavity 11 of the integrating sphere dish 1; the connecting line of the incident light window 111 and the sphere center of the sphere cavity 11 is orthogonal to the connecting line of the characteristic spectrum emergent window 112 and the sphere center of the sphere cavity 11; the optical detection unit 4 measures the characteristic spectrum to be observed through the characteristic spectrum exit window 112; the test method was the method described in the first embodiment above.
The embodiment can be used for measuring the characteristic absorption spectrum and can greatly improve the light detection stability.
EXAMPLE III
Referring to fig. 4, on the basis of the second embodiment, an incident light escape window 113 is further disposed on the sphere cavity 11 of the integrating sphere dish 1, and the incident light escape window 113, the sphere center of the sphere cavity 11 and the incident light window 111 form a straight line; the optical detection unit 4 measures the characteristic spectrum to be observed through the characteristic spectrum exit window 112; the test method was the method described in the first embodiment above.
The embodiment can be used for measuring the characteristic fluorescence spectrum or scattering spectrum, and can greatly improve the light detection stability.
Example four
Referring to fig. 5, on the basis of the second embodiment, only the characteristic spectrum exit window 112 is reserved on the sphere cavity 11 of the integrating sphere dish 1, and the incident light window 111 is removed; the optical detection unit 4 measures the characteristic spectrum to be observed through the characteristic spectrum exit window 112; the test method was the method described in the first embodiment above.
The embodiment can be used for measuring the characteristic spontaneous emission spectrum and can greatly improve the light detection stability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A liquid quality on-line test method is characterized in that: the method includes but is not limited to the following steps,
s100, a metering and sampling unit (2) samples a sample and a reagent with preset dosage to an integrating sphere dish (1) at a first preset speed until the liquid level in the integrating sphere dish (1) is higher than the joint of a transition pipe (13) and an expansion pipe (14) of the integrating sphere dish (1);
s200, reversely extracting a mixed sample with preset dosage from the integrating sphere vessel (1) by the metering and sampling unit (2) so that the liquid level in the integrating sphere vessel (1) is lower than the joint of the sphere cavity (11) of the integrating sphere vessel (1) and the transition pipe (13);
s300, the metering and sampling unit (2) re-samples the reversely extracted mixed sample to the integrating sphere dish (1) at a second preset speed until the liquid level of the mixed sample in the integrating sphere dish (1) is higher than the joint of the transition pipe (13) and the expansion pipe (14) of the integrating sphere dish (1), and a small section of the mixed sample is left in the sample inlet pipe (3) outside the integrating sphere dish (1); the second preset speed is less than the first preset speed;
s400, measuring a characteristic spectrum to be observed emitted by the integrating sphere dish (1) by an optical detection unit (4).
2. The method of claim 1, wherein: the device related to the method consists of an integrating sphere vessel (1), a metering and sample feeding unit (2), a sample feeding pipe (3) and a light detection unit (4); the two ends of the sample inlet pipe (3) are respectively connected with the integrating sphere vessel (1) and the metering and sample inlet unit (2); the metering and sampling unit (2) is used for sampling a sample and a reagent with preset dosage into the integrating sphere vessel (1) or reversely extracting a mixed sample with preset dosage from the integrating sphere vessel (1); the integrating sphere dish (1) is used for providing a reaction field and collecting a characteristic spectrum to be observed generated after a mixed sample in the integrating sphere dish (1) reacts; the light detection unit (4) is used for measuring the characteristic spectrum to be observed collected by the integrating sphere vessel (1).
3. The apparatus of claim 2, wherein: the integrating sphere dish (1) is composed of a sphere cavity (11), a branch pipe (12), a transition pipe (13) and an expansion pipe (14); the upper end of the branch pipe (12) is communicated with the lower end of the ball cavity (11), the upper end of the ball cavity (11) is communicated with the lower end of the transition pipe (13), and the upper end of the transition pipe (13) is communicated with the lower end of the expansion pipe (14); the spherical cavity (11) is an optical integrating sphere and is used for collecting a characteristic spectrum to be observed generated after the mixed sample in the spherical cavity (11) reacts so as to be used for measurement of the optical detection unit (4); the wire diameter of the branch pipe (12) is smaller than that of the spherical cavity (11), and the wire diameter of the transition pipe (13) is smaller than that of the spherical cavity (11), so that the loss amount of the diffuse reflection area of the spherical cavity (11) is reduced; the linear diameter of the transition pipe (13) is larger than that of the branch pipe (12), so that the effect that air bubbles are not mixed at the joint of the spherical cavity (11) and the transition pipe (13) after the sample introduction is finished at the first preset speed can be achieved; the line footpath of dilatation pipe (14) is greater than the line footpath of transition pipe (13), dilatation pipe (14) can play advance the appearance buffering and prevent to advance the continuous bubbling action of appearance in-process and cause liquid in integrating sphere ware (1) along the inner wall of transition pipe (13) climbs out effect outside integrating sphere ware (1).
4. The integrating sphere pan (1) according to claim 3, characterized in that: an incident light window (111) and a characteristic spectrum exit window (112) are arranged on the spherical cavity (11) of the integrating sphere dish (1), the connecting line of the incident light window (111) and the spherical center of the spherical cavity (11) is orthogonal to the connecting line of the characteristic spectrum exit window (112) and the spherical center of the spherical cavity (11), and the optical inspection unit (4) can measure a characteristic absorption spectrum to be observed through the characteristic spectrum exit window (112).
5. The integrating sphere pan (1) according to claim 4, characterized in that: the integrating sphere dish (1) is further provided with an incident light escape window (113) on the sphere cavity (11), the incident light escape window (113), the sphere center of the sphere cavity (11) and the incident light window (111) are on the same straight line, and the light detection unit (4) can measure a characteristic fluorescence spectrum or a scattering spectrum to be observed through the characteristic spectrum exit window (112).
6. The integrating sphere pan (1) according to claim 4, characterized in that: only the characteristic spectrum exit window (112) is reserved on the sphere cavity (11) of the integrating sphere dish (1), the incident light window (111) is removed, and the light detection unit (4) can measure the characteristic spontaneous emission spectrum to be observed through the characteristic spectrum exit window (112).
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| CN202010939157.6A CN112161942A (en) | 2020-09-08 | 2020-09-08 | Liquid quality on-line testing method |
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| CN202010939157.6A CN112161942A (en) | 2020-09-08 | 2020-09-08 | Liquid quality on-line testing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012095651A1 (en) * | 2011-01-10 | 2012-07-19 | Murwillumbah Manufacturing Limited | Analysis apparatus and method |
| CN102607889A (en) * | 2012-03-14 | 2012-07-25 | 广州市怡文环境科技股份有限公司 | Liquid taking and metering method for analytical instrument |
| CN105021837A (en) * | 2015-07-03 | 2015-11-04 | 深圳世绘林科技有限公司 | Automatic sampling method |
| CN204964537U (en) * | 2015-09-11 | 2016-01-13 | 深圳世绘林科技有限公司 | Autoinjection device based on optical integrator ball |
| CN109297947A (en) * | 2018-12-05 | 2019-02-01 | 深圳市微谱科技有限公司 | A kind of photoluminescence or scattering optical measurement instrument |
-
2020
- 2020-09-08 CN CN202010939157.6A patent/CN112161942A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012095651A1 (en) * | 2011-01-10 | 2012-07-19 | Murwillumbah Manufacturing Limited | Analysis apparatus and method |
| CN102607889A (en) * | 2012-03-14 | 2012-07-25 | 广州市怡文环境科技股份有限公司 | Liquid taking and metering method for analytical instrument |
| CN105021837A (en) * | 2015-07-03 | 2015-11-04 | 深圳世绘林科技有限公司 | Automatic sampling method |
| CN204964537U (en) * | 2015-09-11 | 2016-01-13 | 深圳世绘林科技有限公司 | Autoinjection device based on optical integrator ball |
| CN109297947A (en) * | 2018-12-05 | 2019-02-01 | 深圳市微谱科技有限公司 | A kind of photoluminescence or scattering optical measurement instrument |
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