WO2004102182A1 - 試料注入装置及び方法、並びに該試料注入装置を有する液体クロマトグラフィ装置 - Google Patents
試料注入装置及び方法、並びに該試料注入装置を有する液体クロマトグラフィ装置 Download PDFInfo
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- WO2004102182A1 WO2004102182A1 PCT/JP2004/006555 JP2004006555W WO2004102182A1 WO 2004102182 A1 WO2004102182 A1 WO 2004102182A1 JP 2004006555 W JP2004006555 W JP 2004006555W WO 2004102182 A1 WO2004102182 A1 WO 2004102182A1
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- sample
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1004—Cleaning sample transfer devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/18—Injection using a septum or microsyringe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L13/00—Cleaning or rinsing apparatus
- B01L13/02—Cleaning or rinsing apparatus for receptacle or instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00465—Separating and mixing arrangements
- G01N2035/00534—Mixing by a special element, e.g. stirrer
- G01N2035/00554—Mixing by a special element, e.g. stirrer using ultrasound
Definitions
- the present invention relates to a sample injection device and a sample injection method for injecting a sample into a moving liquid, and a liquid chromatography apparatus having the sample injection device.
- a liquid chromatography apparatus in which a sample is pressurized together with a liquid as a mobile phase and sent to a column to separate and elute the components of the sample and detect with a detector, basically has a structure as shown in FIG. Having a configuration.
- the liquid chromatography apparatus includes a mobile phase storage tank 101 for storing a liquid as a mobile phase, a mobile phase deaerator 102 for removing air in the liquid as a mobile phase, and a liquid as a mobile phase.
- a pump 103 for sending from the mobile phase storage tank 101 to the detector 107, a sample is injected into the liquid as a mobile phase toward the separation column 105 (automatic). It includes a filled separation column 105, a column thermostat 106 for keeping the separation column 105 at a substantially constant temperature, and a detector 107 for detecting the components of the eluted sample.
- Carryover refers to the detection result of a previously measured sample substance remaining in a liquid chromatography device in time series, as if the substance were present in the sample currently being measured. This is a phenomenon that reduces the reliability of the analysis results. Carry-over occurs when a sample is injected into a liquid as a mobile phase in the automatic sample injector 104, the sample is adsorbed on the metal and / or resin in the automatic sample injector 104 and remains, and the remaining sample is removed. Is caused by being introduced into the liquid chromatography analysis system when the next sample is injected.
- a self-cleaning function can be provided in the automatic sample injector 104. As shown in FIG. 6, the main operation of the automatic sample injection device 104 is to collect the sample supplied to the sample container 14 with the sample needle 10 and to connect the sample needle 10 from which the sample has been collected to the injection valve 15.
- the sample is injected from the sample needle 10 to the sample loop 16 through the sample injection path, and the flow path of the sample in the injection valve 15 is switched.
- Sending the sample in the column to the separation column 105 is powerful. For this reason, as a place where the sample is adsorbed and remains in the automatic sample injection device 104 (sample adsorption site), the outer wall of the sample needle 10 after the sample is collected, and the sample needle 10 after the sample is injected. And the inner wall of the sample injection path, the inner wall of the sample loop 16 after the sample is sent to the separation column 105, and the flow path of the sample in the injection valve 15.
- the self-cleaning function is provided corresponding to these sample adsorption sites, the function of cleaning the outer wall of the sample needle, the function of cleaning the inner wall of the sample needle, the function of cleaning the sample injection path, and the sample loop and injection functions It is sufficient to provide four self-cleaning functions of the valve cleaning function. These four self-cleaning functions are described below.
- (1) Function for washing the outer wall of the sample needle immediately before sample injection (needle press) As shown in FIG. 7, the needle press is used to inject the sample collected by the sample needle 10 into the needle. Immediately before injection into the port, the sample needle 10 is immersed in the cleaning solution sent to the cleaning unit 17 to wash the sample adsorbed and remaining on the outer wall of the sample needle 10 after collecting the sample. . The washing solution that has washed the sample remaining on the outer wall of the sample needle 10 is discarded, and the pure washing solution is supplied to the washing unit 17.
- the needle press allows the user to set the time (washing time) during which the sample needle 10 is immersed in the washing solution.
- the needle post-soak immerses the sample needle 10 in the washing liquid supplied to the washing section 17 and simultaneously inserts the sample needle 10 into the sample needle 10.
- the washing liquid supplied to the washing section 17 and simultaneously inserts the sample needle 10 into the sample needle 10.
- the cleaning solution that has washed the sample remaining on the inner wall of the sample needle 10 is discarded, and the pure cleaning solution is supplied to the washing unit 17.
- the user can set the time (washing time) for flowing the washing solution to the sample needle 10.
- post-injection wash is a cleaning method in which after the sample is injected into the injection port, the following operations 1) to 3) are sequentially performed during the analysis of the sample. Function.
- the user can set the volume of the washing solution to be sucked into the sample needle 10 and the number of times the washing solution is discharged and sucked (the number of washing times). It is also possible to provide two or more cleaning liquid ports 24 and use two or more cleaning liquids.
- the cleaning liquid used first is a liquid having a strong detergency (such as a strong alkali that is not desired to pass through the separation column 105), and is used later. Is a liquid used as a mobile phase, a liquid with strong detergency can be used, and the liquid with strong detergency can be used for analysis. Mixing into the system can be prevented.
- a loop rinsing valve is required outside the automatic sample injector.
- the loop rinse valve 108 operates to switch the flow path of the mobile phase liquid supplied to the mobile phase storage tank 101. That is, as shown in FIG. 10 (a), when the cleaning function of the loop rinse is not operated, the liquid as the mobile phase sent out by the pump 103 is supplied into the sample injection device 104 and separated together with the sample. To the detector column 105 and the detector 107. Conversely, as shown in FIG.
- the liquid as the mobile phase sent out by the pump 103 does not pass through the sample injection device 104, and the separation column 105 And sent directly to the detector 107. If such a loop rinse valve 108 is used, the sample is sent to the separation column 105 through the flow path shown in FIG. 10 (a), and is immediately switched to the flow path shown in FIG. 10 (b). By transmitting the liquid as the phase to the separation column 105, the analysis can be performed, and at the same time, the sample loop and the injection valve can be washed.
- Loop rinsing is a cleaning function for sequentially executing the following operations 1) to 4) after injecting a sample into the sample loop 16, as shown in Figs.
- the user can set the time for discharging the cleaning liquid from the sample needle 10 (cleaning time) and the number of times the injection valve 15 is switched.
- two or more washing solution containers are provided, these washing solution containers are connected to the sample needle 10, and the connection between these washing solution containers and the sample needle 10 is switched to provide two types of washing solution containers. It is also possible to use the above cleaning liquid.
- the cleaning liquid used first is a liquid having a strong detergency (such as a strong alkali that does not want to pass through the separation column 105), and the cleaning liquid used later is If the liquid is used as a mobile phase, it is possible to use a liquid having a strong detergency and to prevent the liquid having a strong detergency from being mixed into an analysis system. .
- a strong detergency such as a strong alkali that does not want to pass through the separation column 105
- a sample introduction device that introduces a sample into an analyzer such as a liquid chromatography, which can perform mixing of a sample or washing for $ 21 without sucking and discharging a liquid, is also disclosed in Japanese Patent Application Laid-Open No. H10-260,086. No. 11-304779.
- the sample introduction device includes a vibration generating unit such as an ultrasonic vibrator arranged directly or in contact with a sample injection needle via a member capable of transmitting vibration, and a vibration control unit for controlling the vibration generating unit. Unit.
- the ultrasonic transducer placed in contact with the sample injection needle or a metal part connected to the sample injection needle, and is controlled by the vibration control unit when mixing the sample or washing the needle.
- the needle itself is vibrated by the ultrasonic vibrator.
- the automatic sample injection device provided with four self-cleaning functions executes the four self-cleaning functions in combination in order to reduce the carryover phenomenon, and therefore requires an average cleaning time of about 3 minutes.
- a needle press is performed before the start of analysis, but a wash of about 1 to 5 seconds is usually sufficient. No cleaning time is required. Therefore, the other three self-cleaning functions except the needle press require about 3 minutes in total.
- these three self-cleaning functions can be performed simultaneously with the analysis of the sample. Therefore, if the analysis time is 3 minutes or more, there is no problem because all three self-cleaning functions are performed within the analysis time.
- a vibration generating unit such as an ultrasonic vibrator arranged directly or in contact with a sample injection needle via a member capable of transmitting vibration
- the automatic sample injection device is basically a precision machine, so it is necessary to avoid unnecessary vibration. For this reason, a sample introduction device equipped with an ultrasonic vibrator arranged directly or in contact with a sample injection needle via a member capable of transmitting vibration is affected by the ultrasonic vibration of the sample injection needle. There is also a problem that it can be received.
- An object of the present invention is to provide a sample injection device, a sample injection method, and a liquid chromatography device having the sample injection device, which do not lower the durability of the sample needle.
- One of the above objects is to provide a sample container to which a sample is supplied, a sample needle to suck and discharge the sample, a cleaning unit to which a cleaning liquid for cleaning at least the sample needle is supplied, A sample injecting unit for injecting the sample discharged from the needle into a moving liquid, and a needle moving unit for moving the sample needle between the sample container, the washing unit, and the sample injecting unit.
- the cleaning section is achieved by a sample injection device having an ultrasonic vibrator for generating ultrasonic waves in the cleaning liquid.
- the cleaning unit since the cleaning unit has the ultrasonic vibrator that generates ultrasonic waves in the cleaning liquid, carryover can be sufficiently reduced, and the cleaning is simple and the cleaning time is short.
- the present invention can provide a sample injection device which has a means and does not reduce the durability of the sample needle where the effect of vibration by the washing means is small and the error of the sample injection amount is small.
- the cleaning unit is configured to reduce vibration of the ultrasonic vibrator from propagating to members other than the cleaning unit in the sample injection device. It has a member.
- the cleaning unit is configured to reduce the propagation of the vibration by the ultrasonic vibrator to members other than the cleaning unit in the sample injection device. Therefore, the influence of the vibration by the ultrasonic vibrator on members other than the cleaning unit in the sample injection device can be further reduced.
- the vibration frequency of the ultrasonic vibrator is preferably 20 kHz or more and 80 kHz or less.
- the vibration frequency of the ultrasonic vibrator is 20 kHz or more.
- the inner diameter of the sample needle is preferably 0.1 mm or more and 0.8 mm or less.
- the inner diameter of the sample needle is not less than 0.1 mm and not more than 0.8 m. m or less, it is possible to provide a sample injection device capable of reducing sample loss.
- One of the above objects is a step of sucking a sample into a sample needle, a step of holding the sample in the sample needle, and a step of immersing the sample needle in a cleaning liquid, and a step of applying ultrasonic waves to the cleaning liquid. And a step of cleaning the sample needle immersed in the cleaning liquid, and a step of discharging the sample from the sample needle and injecting the sample into a moving liquid.
- sample injection method a step of sucking the sample into the sample needle, a step of holding the sample in the sample needle, and a step of immersing the sample needle in the cleaning liquid, Generating a sound wave to clean the sample needle immersed in the cleaning solution; and discharging the sample from the sample needle and injecting it into the moving liquid.
- a sample injection method that can be reduced, has a simple and short cleaning time, has little effect of vibration due to the cleaning means, has a small error in the sample injection amount, and does not reduce the durability of the sample needle. Can be provided.
- the vibration frequency of the ultrasonic vibrator is preferably 20 kHz or more and 80 kHz or less.
- the vibration frequency of the ultrasonic vibrator is not less than 20 kHz and not more than 80 kHz. Therefore, it is possible to provide a sample injection method capable of reducing carryover more efficiently. it can.
- the inner diameter of the sample needle is preferably 0.1 mm or more and 0.8 mm or less.
- the inner diameter of the sample needle is not less than 0.1 mm and not more than 0.8 mm, it is possible to provide a sample injection method capable of reducing loss of a sample. .
- a mobile phase storage tank for storing a liquid as a mobile phase, a sample injection device for injecting a sample into the liquid as the mobile phase, and the sample together with the liquid as the mobile phase.
- a separation column for separating the components of the sample sent from the injection device; and
- a sample container to which the sample is supplied, a sample needle for sucking and discharging the sample, and at least the sample needle for detecting a component of the sample separated by the separation column.
- a washing unit to which a washing liquid for washing the sample needle is supplied, a sample injection unit to inject the sample discharged from the sample needle into the liquid as the mobile phase, and the sample container, the washing unit, and
- the liquid chromatography apparatus includes a needle moving means for moving the sample needle between the sample injection units, and the cleaning unit includes an ultrasonic vibrator for generating ultrasonic waves in the cleaning liquid.
- the sample injection device supplies a sample container to which the sample is supplied, a sample needle for sucking and discharging the sample, and a cleaning liquid for washing at least the sample needle.
- a sample injection unit for injecting the sample discharged from the sample needle into the liquid as the mobile phase, and the sample container between the sample container, the washing unit, and the sample injection unit.
- the cleaning unit has an ultrasonic vibrator that generates ultrasonic waves in the cleaning liquid, so that carry-over can be sufficiently reduced, and the cleaning time is simple and easy.
- a sample injection device that does not reduce the durability of the sample needle that does not reduce the error of the sample injection amount that is less affected by vibration due to the cleaning device. It is possible to provide a that liquid chromatography apparatus.
- the washing unit is configured to reduce a vibration of the ultrasonic oscillator from propagating to members other than the washing unit in the sample injection device. It has a member.
- the washing unit includes a vibration damping member that reduces the propagation of the vibration by the ultrasonic transducer to members other than the washing unit in the sample injection device. Accordingly, the influence of the vibration by the ultrasonic vibrator on the members other than the cleaning unit in the sample injection device can be further reduced.
- the vibration frequency of the ultrasonic vibrator is preferably 20 kHz or more and 80 kHz or less.
- the vibration frequency of the ultrasonic vibrator is 20 k Since the frequency is not less than Hz and not more than 80 kHz, it is possible to provide a liquid chromatography apparatus having a sample injection device capable of reducing carryover more efficiently.
- the inner diameter of the sample needle is preferably
- the liquid chromatography apparatus since the inner diameter of the sample needle is not less than 0.1 mm and not more than 0.8 mm, it is necessary to provide a liquid chromatography apparatus capable of reducing loss of a sample. S can.
- FIG. 1 is a view showing an automatic sample injection device according to the present invention.
- FIG. 2 is a view for explaining the operation of an injection valve.
- FIG. 3 is a diagram illustrating a sample injection method of the present invention.
- FIG. 4 is a diagram illustrating a liquid chromatography device.
- FIG. 5 is a diagram showing the results of carryover evaluation performed on a liquid chromatography apparatus, where (a) shows a sample peak, and (b) shows a needle pre-wash and a needle post-wash.
- FIG. 7C is a diagram showing a detection result in the case of performing all of the four self-cleaning functions
- FIG. 7D is a diagram showing a detection result in the case of performing only the ultrasonic cleaning in the present invention. .
- FIG. 6 is a diagram illustrating main operations of the automatic sample injection device.
- FIG. 7 is a view for explaining a needle press.
- FIG. 8 is a view for explaining a needle posture.
- FIG. 9 is a diagram for explaining post-injection cache.
- FIG. 10 is a diagram for explaining the operation of the loop rinse valve in the loop rinse, wherein (a) the case where the cleaning function of the loop rinse is not operated, and (b) the case where the cleaning function of the loop rinse is operated.
- FIG. 10 is a diagram for explaining the operation of the loop rinse valve in the loop rinse, wherein (a) the case where the cleaning function of the loop rinse is not operated, and (b) the case where the cleaning function of the loop rinse is operated.
- FIG. 11 is a diagram illustrating cleaning of a sample loop and an injection valve in loop rinsing.
- FIG. 12 is a diagram illustrating the configuration and operation of an automatic sample injection device using a direct injection method.
- FIG. 13 is a diagram showing the results of evaluation of carryover performed on a liquid chromatography device including an automatic sample injection device using a direct injection method, where (a) is a sample peak, and (b) is a sample peak.
- FIG. 7 is a diagram illustrating detection results when ultrasonic cleaning is performed and when ultrasonic cleaning is not performed.
- FIG. 14 is a view for explaining the relationship between the inner diameter of the sample needle and the standing wave of ultrasonic waves generated in the cleaning liquid.
- FIG. 15 is a diagram showing a relationship between a vibration frequency of an ultrasonic transducer and a carry bar regarding ultrasonic cleaning in the present invention.
- FIG. 16 is a diagram showing the relationship between the inner diameter of a sample needle and the sample retention.
- the sample injection device of the present invention includes at least a sample container, a sample needle, a washing unit, a sample injection unit, and a needle moving unit.
- the sample container is supplied with a sample to be injected into the moving liquid and is stored therein.
- the sample needle sucks and discharges the sample to be injected into the moving liquid.
- the sample needle is connected to, for example, a syringe, and discharges and aspirates the sample by controlling the pressure in the sample needle by pushing and pulling the syringe.
- the washing unit is supplied with a washing liquid for washing at least the sample needle.
- the cleaning liquid supplied to the cleaning unit may be used for cleaning the sample injection path and the sample loop in the above-mentioned injection valve other than the sample dollar. Also, the cleaning liquid may be the same liquid as the moving liquid.
- the sample injection unit is a member that injects the sample discharged from the sample needle into the liquid that moves inside the sample injection device of the present invention. More specifically, the sample injection unit includes the above-described injection valve, sump phenol, and the like.
- the needle moving means moves the sample needle between the sample container, the washing unit, and the sample injection unit.
- the needle moving means may move the sample needle alone to the sample container, the washing section, and the sample injection section. Also instead, knee
- the dollar moving means may be different means depending on the movement of the sample needle between the sample container and the washing unit and the movement of the sample needle between the washing unit and the sample injection unit.
- the cleaning section has an ultrasonic vibrator for generating ultrasonic waves in the cleaning liquid, and is made of a material capable of transmitting ultrasonic waves generated by the vibration of the ultrasonic vibrator to the cleaning liquid.
- the ultrasonic vibrator can be attached to an arbitrary place in the cleaning unit (for example, a bottom surface of the cleaning unit) as long as the ultrasonic vibrator can vibrate freely.
- the vibration of the ultrasonic transducer can be controlled by a device that controls the vibration of the ultrasonic wave.
- the vibration of the ultrasonic transducer generates ultrasonic waves in the cleaning liquid stored in the cleaning section.
- Ultrasonic waves generated by the ultrasonic transducer are non-coherent compression waves, which are reflected by the inner wall of the cleaning section and vibrate the cleaning liquid near the outer wall of the sample needle immersed in the cleaning liquid. This makes it possible to wash the sample adsorbed and remaining on the outer wall of the sample needle.
- the ultrasonic needle is not attached to the sample needle itself (directly or via a member capable of transmitting vibration), so that the sample needle itself is not vibrated. Therefore, in the present invention, the sample needle is not subjected to the load due to the vibration of the ultrasonic vibrator, so that the sample needle is not deteriorated (without decreasing the durability of the sample needle), and the ultrasonic wave of the sample needle is reduced. Cleaning can be realized. In addition, since the sample needle itself does not vibrate, even if the sample needle is ultrasonically cleaned after aspirating the sample, it is necessary to inject the sucked sample into a moving liquid that is less likely to be lost in the cleaning solution. There is little error in the amount of fees.
- the washing unit has a vibration damping member.
- the vibration damping member reduces the propagation of the vibration by the ultrasonic vibrator to members other than the cleaning unit in the sample injection device. Therefore, it is possible to further reduce the adverse effect of the vibration of the ultrasonic transducer on members other than the cleaning unit in the sample injection device.
- the vibration damping member is, for example, a spring And an elastic body such as rubber. Also, if the vibration from the ultrasonic vibrator does not propagate to members other than the cleaning section in the sample injection device, the energy of the vibration from the ultrasonic vibrator is not wasted and is effectively used for cleaning the sample needle. can do.
- the vibration frequency of the ultrasonic transducer is preferably 20 kHz or more and 80 kHz or less. If the vibration frequency of the ultrasonic vibrator is less than 20 kHz, the volume of the cleaning liquid stored in the cleaning section is sufficient to generate sufficient standing ultrasonic waves in the cleaning liquid stored in the cleaning section. Need to be larger. Therefore, the size of the sample injection device including the washing unit and the size of the liquid chromatography device including the sample injection device must be increased. On the other hand, if the vibration frequency of the ultrasonic vibrator exceeds 80 kHz, a larger special ultrasonic vibrator is needed to generate sufficient standing ultrasonic waves in the cleaning liquid stored in the cleaning section. become.
- the vibration frequency of the ultrasonic vibrator is not less than 20 kHz and not more than 80 kHz, a standing ultrasonic wave can be more easily generated in the cleaning liquid stored in the cleaning section. Further, when the vibration frequency of the ultrasonic transducer is less than 20 kHz or more than 80 kHz, the efficiency of reducing carryover is slightly reduced. On the other hand, when the vibration frequency of the ultrasonic transducer is 20 kHz or more and 80 kHz or less, carryover can be more efficiently reduced.
- the size of the cleaning unit in the direction in which the ultrasonic vibration is transmitted in the cleaning liquid is not too small with respect to the wavelength of the standing wave of the ultrasonic wave generated in the cleaning liquid.
- the size of the cleaning unit in the direction in which the vibration is transmitted is larger than the wavelength of the standing wave of the ultrasonic wave generated in the cleaning liquid. In this case, a standing ultrasonic wave can be stably generated in the cleaning liquid stored in the cleaning section, and the sample adsorbed and remaining on the outer wall of the sample needle can be effectively removed.
- the inner diameter of the sample needle is significantly smaller than the wavelength of the standing ultrasonic wave generated in the cleaning liquid stored in the cleaning section.
- the inside diameter of the sample needle is significantly smaller than the wavelength of the ultrasonic standing wave generated in the cleaning liquid stored in the cleaning section, sometimes a standing ultrasonic wave is generated in the liquid sample held in the sample needle. No loss of liquid sample held in the sample needle due to ultrasonic waves. As a result, without loss of the liquid sample held in the sample needle by ultrasonic The sample adsorbed and remaining on the outer wall of the needle can be removed.
- the ultrasonic wave is applied to the liquid sample held in the sample needle. Occasionally, a portion of the liquid sample held in the sample needle may be lost.
- FIG. 14 is a diagram illustrating the relationship between the inner diameter of the sample needle and the standing ultrasonic wave generated in the cleaning liquid.
- the inner diameter A of the sample needle 10 is preferably 0.1 mm or more and 0.8 mm or less. Masure, When the inner diameter A of the sample needle 10 is 0.8 mm or less, the inner diameter A of the sample needle 10 is smaller than the wavelength B of the standing wave 32 of the ultrasonic wave generated in the cleaning liquid 31 stored in the cleaning section.
- the sample adsorbed and remaining on the outer wall of the sample needle 10 can be removed without loss of the liquid sample 30 held in the sample dollar 10 by ultrasonic waves.
- the vibration frequency force of the ultrasonic vibrator 21 is not less than 20 kHz and not more than 80 kHz and exceeds the inner diameter A force of the sample needle 10 of 0.8 mm, one of the liquid sample 30 held in the sample needle 10 Parts may be lost.
- the inner diameter A of the sample needle 10 is not less than 0.1 mm regardless of the vibration frequency of the ultrasonic transducer 21, a sufficient amount of the sample to be injected into the moving liquid is placed in the sample needle 10. Can be collected.
- the inner diameter A 1S of the sample needle 10 is smaller than 0.1 mm, the amount of the sample that can be collected in the sample needle 10 is too small. It may be difficult to collect a sample.
- the automatic sample injector includes a sample needle 10, a syringe 11, a cleaning liquid pump 12, a valve 13, a sample container 14, an injection valve 15, a sample loop 16, a cleaning unit 17, a cleaning liquid container 18, a cleaning liquid port 24, and It has a needle moving means not shown.
- the sample needle 10 is connected to a syringe 11, and the sample needle 10 is pushed and pulled by the syringe 11 so that the sample needle 10 is supplied to the sample container 14. Can be sucked and discharged.
- the cleaning liquid stored in the cleaning liquid container 18 is continuously sent out to the cleaning unit 17 or the sample needle 10 by the cleaning liquid pump 12.
- a valve 13 is provided between the sample needle 10 and the syringe 11.
- the cleaning liquid delivered from the cleaning liquid container 18 is supplied to the cleaning unit 17 or the sample needle 11.
- the cleaning liquid is continuously supplied to the cleaning unit 17, and a certain amount or more of the cleaning liquid is discharged from the cleaning unit 17 as a waste liquid.
- the cleaning unit 17 is provided with an ultrasonic vibrator, and is fixed to the bottom surface of the automatic sample injection device via a vibration damping panel as a vibration damping member.
- the injection valve 15 has an injection port 19 through which the sample needle 10 is inserted and a sample or a washing liquid is injected from the sample needle 10, and a sample loop 16 is connected thereto.
- a liquid is supplied to the injection valve 15 from outside the automatic sample injector, and the liquid is sent to the outside of the automatic sample injector. More specifically, when the automatic sample injection device is used in a liquid chromatography device, a solvent provided as a mobile phase is supplied by a pump provided outside the automatic sample injection device, and the solvent is separated. To the column for use. Further, one or a plurality of washing liquid ports 24 (three washing liquid ports 24 in FIG. 1) may be provided in the automatic sample injection device (in this case, a post which is one of the self-cleaning functions described above). Injection wash can be performed).
- the injection valve 15 has six ports, and these six ports are connected by any combination of the solid line A and the dotted line B.
- the injection valve 15 can switch the connection indicated by the solid line A or the dotted line B.
- the washing liquid is the same as the solvent as the mobile phase.
- the solvent as the mobile phase supplied from the external pump is sent to the separation ram.
- the sample is supplied to the injection port 19 by the sample needle
- the supplied sample is held in the sample norape 16.
- the length of the sample nose 16 is designed to hold the maximum amount of sample that can be supplied by the sample needle.
- the solvent as the mobile phase supplied from the outside of the automatic sample injector passes through the sample loop 16 And sent to the separation column.
- the sample is held in the sample loop 16, the sample is sent to the separation column together with the solvent as the mobile phase passing through the sample loop 16.
- a cleaning liquid is supplied to the injection port 19 via a sample needle.
- the washing liquid is the same as the solvent as the mobile phase, so that all the flow paths connecting the six ports are connected. It can be washed with a washing solution (solvent as a mobile phase). At the same time, the injected sample can be sent to a separation column to separate and analyze the components of the sample.
- the sample injection method of the present invention will be described. First, the sample is sucked into the sample needle, and the sample needle is immersed in the washing liquid while the sample is held on the sample needle.
- the sample injection method of the present invention using the sample injection device of the present invention will be described with reference to FIG.
- the previously-washed sample injection needle 10 is moved to the sample container 14 by the needle moving means, and is immersed in the sample supplied to the sample container 14.
- the syringe 11 connected to the sample needle 10 is pulled to suck the sample into the sample needle 10.
- the needle for sample 10 is moved to the washing unit 17 using the needle moving means, and is immersed in the washing liquid supplied to the washing unit.
- the cleaning liquid flows through the cleaning section 17, and the cleaning section 17 is continuously supplied with a pure cleaning liquid. It is.
- the ultrasonic vibrator 21 attached to the cleaning unit 17 is vibrated to generate ultrasonic waves in the cleaning liquid.
- the outer wall of the sample needle 10 immersed in the cleaning liquid can be cleaned by the ultrasonic waves generated in the cleaning liquid.
- the sample needle 10 itself does not vibrate. There is no loss to the cleaning solution.
- the washing unit is provided with a vibration damping panel 22 which is a vibration damping member, which prevents the vibration of the ultrasonic transducer 21 from propagating to members other than the washing unit 17 in the sample injection device. Reduce.
- the sample needle 10 After the sample needle 10 has been ultrasonically cleaned, the sample needle 10 is moved to the injection valve 15 which is a sample injection part using the needle moving means, and the sample needle is inserted into the injection port 19 of the injection valve 15. Purchase 10 Finally, the syringe 11 connected to the sample needle 10 is pushed, and the sample collected in the sample needle 10 is moved via the injection valve 15 and the sample loop 16 provided in the injection valve 15. Inject into the liquid you want.
- the sample injection device and / or the sample injection method of the present invention carryover can be sufficiently reduced.
- the conventional four self-cleaning functions needle pre-wash, needle post-wash, post-injection wash, and loop rinse
- the washing conditions can be easily set.
- the cleaning time can be reduced as compared with the conventional cleaning using the four self-cleaning functions.
- one or more of the above-described conventional four self-cleaning functions may be combined with the ultrasonic cleaning of the sample needle according to the present invention, if necessary.
- the durability of the sample needle does not decrease.
- the liquid chromatography apparatus of the present invention comprises at least a mobile phase storage tank 101 and a sample injection device 10. 4. It has a separation column 105 and a detector 107, and the sample injection device 104 uses the sample injection device of the present invention.
- the mobile phase storage tank 101 stores a well-known liquid as a mobile phase used for liquid chromatography.
- the sample injection device of the present invention has a mechanism for cleaning the sample needle with ultrasonic waves, and injects the sample into a liquid as a mobile phase.
- the separation column 105 is filled with a well-known column filler as a stationary phase, and separates a sample component sent from the sample injection device 104 together with a liquid as a mobile phase.
- the detector 107 detects the components of the sample separated by the separation column 105.
- a liquid such as a pump 103 provided between the mobile phase storage tank 101 and the sample injection device 104 is moved.
- Use phase delivery means Before the liquid as the mobile phase is sent to the sample injecting device 104 by the mobile phase sending means such as the pump 103, a well-known movement provided between the mobile phase storage tank 101 and the mobile phase sending means such as the pump 103.
- the air contained in the liquid as the mobile phase be degassed by the phase deaerator 102.
- a well-known column thermostat 106 for keeping the temperature of the separation column 105 constant is provided in the separation power column 105. It is desirable.
- an automatic sample injection device using a direct injection method can be used as a sample injection device in the liquid chromatography device of the present invention.
- the configuration and operation of the automatic sample injection device using the direct injection method will be described with reference to FIG.
- the automatic sample injection device using the direct injection method includes a sample needle 10, a syringe 11, a cleaning liquid pump 12, a valve 13, a sample container 14, an injection valve 15, a pipe 25, cleaning units 17 and 17 ', And needle moving means (not shown).
- the sample needle 10 constitutes a part of a pipe 25 connecting two ports of the injection valve 15.
- the sample nozzle 10 is combined with the pipe 25 to form a flow path through which the solvent as the mobile phase flows.
- the sample needle 10 is used. Is Separate from the tube 25 and move to the sample container 14, the washing unit 17 and / or 17 ', respectively, using the needle moving means. Further, the syringe 11 is connected to one port of the injection valve 15 and can be connected to the sample needle 10 by switching the connection between the ports of the injection valve 15. When the syringe 11 is connected to the sample needle 10, the sample needle 10 can suck and discharge the sample supplied to the sample container 14 by pushing and pulling the syringe 11.
- the cleaning liquid pump 12 continuously sends the cleaning liquid stored in the cleaning liquid container to the cleaning unit 17 or 17 ′.
- a valve 13 is provided between the injection valve 15 and the syringe 11, and by switching this valve 13, the cleaning liquid delivered from the cleaning liquid container is transferred to the cleaning unit 17 or 17 ′. Can be supplied. That is, when the injection valve 15 is connected to the cleaning liquid pump 12 by switching the valve 13, the cleaning liquid is supplied to the cleaning unit 17 through the port of the injection valve 15 connected to the cleaning unit 17. . When the cleaning unit 17 ′ is connected to the cleaning liquid pump 12 by switching the valve 13, the cleaning liquid is supplied to the cleaning unit 17 ′.
- the cleaning liquid is continuously supplied to the cleaning unit 17 or 17 ′, and a certain amount or more of the cleaning liquid is discharged as waste liquid from the cleaning unit 17 or 17 ′ through the waste liquid port 23.
- an ultrasonic vibrator 21 is attached near the cleaning unit 17. By vibrating the ultrasonic vibrator 21, ultrasonic waves can be generated in the cleaning liquid supplied to the cleaning unit 17.
- a solvent as a mobile phase is supplied to the injection valve 15 by a pump 103 provided outside the automatic sample injection device, and the solvent is sent to a separation column 105.
- the injection valve 15 has six ports, and these six ports are connected by any combination of the solid line A or the dotted line B.
- the injection valve 15 can switch the connection indicated by the solid line A or the dotted line B.
- the washing liquid is the same as the solvent as the mobile phase.
- the six ports of the injection valve 15 are connected as shown by a solid line A.
- the sample needle 10 is integrally connected to the pipe 25.
- the solvent as the mobile phase supplied from the external pump 103 is sent to the separation column 105 through a flow path formed by coupling the sample needle 10 and the pipe 25 to the body.
- the three ports of the valve 13 are not connected to each other as shown by C1 in FIG.
- the connection of the six ports in the injection valve 15 is switched as shown by the dotted line B.
- the solvent as the mobile phase supplied from the external pump 103 is sent to the separation column 105 without passing through the sample needle 10 and the pipe 25. Therefore, it becomes possible to separate the sample needle 10 from the pipe 25, to collect a sample with the sample needle 10, and to wash the sample needle.
- the sample needle 10 when collecting the sample supplied to the sample container 14 using the sample needle 10, the sample needle 10 was placed on the sample container 14 using the needle moving means. The tip of the sample needle 10 is immersed in the sample.
- the sample needle 10 and the syringe 11 are connected via the injection valve 15, by pulling the syringe 11, the force S for collecting an appropriate amount of the sample into the sample needle 10 can be obtained.
- the sample needle 10 from which the sample has been collected is moved to the washing section 17 and / or 17 ′ by using the needle moving means without pushing and pulling the syringe 11. Move up to Then, the tip of the sample needle 10 is immersed in the washing unit 17 and / or 17 ′.
- the ultrasonic vibrator 21 attached near the washing unit 17 is vibrated. Ultrasonic waves are generated in the cleaning liquid in the cleaning section 17. In this way, the outer surface of the distal end portion of the sample needle 10 can be effectively cleaned by the ultrasonic waves generated in the cleaning liquid of the cleaning section 17.
- the sample held by the sample needle 10 does not vibrate the sample needle 10 itself even when ultrasonic waves are generated in the cleaning liquid, so that there is no loss of the collected sample to the cleaning liquid.
- the waste liquid generated by ultrasonic cleaning of sample $ 10 is discharged to the outside through the waste liquid port 23. It is.
- the knob 13 is moved to the position shown in FIG. In the state shown in C3, the cleaning liquid pump 12 and the cleaning unit 17 'are connected, and the cleaning liquid is continuously supplied to the cleaning unit 17'. Thereby, the outer surface of the tip portion of the sample needle 10 can be washed with the washing liquid continuously supplied to the washing section 17 '. Then, the waste liquid generated by washing the sample needle 10 is discarded outside through the waste liquid port 23.
- the sample needle 10 is moved to the pipe 25 by using a needle moving means that does not push and pull the syringe, and the sample needle 10 is connected to the pipe 25.
- a flow path of the solvent as the mobile phase supplied from the external pump 103 is formed.
- the sample collected in the sample needle is injected into the pipe 25 by pressing the syringe.
- the connection of the six ports in the injection valve 15 is switched as shown by the dotted line A.
- the solvent flows as a mobile phase supplied from an external pump 103 through the pipe 25 and is supplied to the separation column 105 together with the sample injected into the pipe 25.
- the components of the sample supplied to the separation column 105 together with the solvent as the mobile phase are separated by the separation column 105, and those components can be detected by the detector.
- the valve 13 is set to the state C2 or C3 shown in FIG. 12, and the cleaning liquid pump 12 and the cleaning section 17 or 17 'are connected to exchange the cleaning liquid in the cleaning section 17 or 17'. That is, when the valve 13 is set to the state C2 shown in FIG. 12, the cleaning liquid pump 12 and the cleaning unit 17 are connected, and a certain amount of the cleaning liquid is supplied to the cleaning unit 17.
- the cleaning liquid remaining in the cleaning section 17 after the ultrasonic cleaning of the sample needle 10 is discarded to the outside through the waste liquid port 23, and the cleaning section 17 is supplied with a new cleaning liquid supplied by the cleaning liquid pump.
- the valve 13 is set to the state C3 shown in FIG. 12, the cleaning liquid pump 12 and the cleaning unit 17 'are connected, and a certain amount of the cleaning liquid is supplied to the cleaning unit 17'.
- the cleaning liquid remaining in the cleaning section 17 ′ after applying the needle press to the sample need nozzle 10 is discarded to the outside through the waste liquid port 23, and the cleaning section 17 ′ is pumped by the cleaning liquid pump.
- the supplied new cleaning liquid is supplied.
- a mixed solvent of CH CN (volume ratio 55:45) was used.
- the solvent flow rate in the mobile phase is 0.2
- a mixed solvent having the same composition as the solvent of the mobile phase was also used for the washing solution.
- the separation column 105 a column having an inner diameter of 2 mm and a length of 150 mm was used, and the temperature of the separation column 105 was maintained at 40 ° C. by using a column thermostat 106.
- a column packing material as a stationary phase in liquid chromatography octadecinolerated silica gel having a particle diameter of 5 microns was used. As a sample for evaluating carry-over, carry-over is likely to occur.
- a basic and hydrophobic clodin hexidine represented by As a detector 107 for detecting clodin hexidine, an absorption spectrophotometer using ultraviolet light having a wavelength of 260 nm was used.
- the ultrasonic cleaning in the present invention did not change the injection amount of the sample into the mobile phase.
- 2 ⁇ l of 12 ppm closin hexidine was collected with a sample needle 10, and then the sample needle 10 was immersed in the washing part, and at the same time, the outer wall of the sample needle 10 was ultrasonically cleaned. Thereafter, the collected sample was injected into the mobile phase.
- the injection amount of the sample detected when the sample needle 1 o was ultrasonically cleaned did not change compared to when the sample needle 10 was not ultrasonically cleaned. Therefore, it was found that the ultrasonic cleaning in the present invention did not reduce the amount of the sample injected into the mobile phase.
- Figure 5 shows the carry-over evaluation results.
- chlorohexidine with a high concentration of 1200 ppm was collected into a sample needle and injected into the mobile phase, and a peak due to hexidine was detected.
- the same solvent as the mobile phase not containing hexidine (hereinafter referred to as a blank sample) was injected in No. 2, and the presence or absence of remaining closin hesidine (carry-over) was observed.
- cleaning shown in the following (1), (2) and (3) was performed.
- FIG. 5 (a) shows the peak of Clos hexidine, which was detected when a 2 / L high concentration of 1200 ppm Clos hexidine was injected into the mobile phase.
- Figures 5 (b), (c) and (d) show the measurement results of carryover (residual closin hexidine) after injection of the blank sample when only washing was performed.
- the horizontal axis represents the relative detection time
- the vertical axis represents the absorbance proportional to the concentration of hexidine.
- the cleaning time by ultrasonic cleaning was 20 seconds.
- Carryover was evaluated in the same manner as in Example 1 using a liquid chromatography apparatus as shown in Fig. 4 provided with an automatic sample injection apparatus by the direct injection method as shown in Fig. 12.
- the flow rate of the solvent in the mobile phase was 0.2 ml / min.
- a mixed solvent having the same composition as the solvent of the mobile phase was also used for the washing solution.
- As the separation column 105 a column having an inner diameter of 2 mm and a length of 150 mm was used, and the temperature of the separation column 105 was maintained at 40 ° C. using a column thermostat 106.
- the column packing material used as the stationary phase in liquid chromatography is Silylated silica gel was used.
- Hexidine was used as a sample to evaluate carryover.
- a detector 107 for detecting clodin hexidine an absorbance detector using ultraviolet light having a wavelength of 260 nm was used.
- FIG. 13 shows the evaluation results of carry over.
- clodin hexidine with a high concentration of 120 Oppm of 2 ⁇ M was collected into a sample needle and injected into the mobile phase, and a peak due to clodin hexidine was detected.
- the same solvent as that of the mobile phase containing no 21-hexidine hereinafter referred to as a blank sample
- Fig. 13 (a) shows the peak of Clos hexidine, which was detected when a 2 / L high concentration of 1200 ppm Clos hexidine was injected into the mobile phase.
- Hexidine is shown in P1 and P2 in Fig. 13 (b), respectively.
- the horizontal axis is the relative detection time (minutes)
- the vertical axis is the absorbance proportional to the concentration of clodin hexidine.
- FIG. 15 shows the relationship between the vibration frequency of the ultrasonic vibrator and the carryover related to the ultrasonic cleaning in the present invention shown in (1) of the second embodiment.
- the horizontal axis in Fig. 15 shows the vibration frequency (kHz) of the ultrasonic transducer provided in the washing section of the sample injection device, and the vertical axis shows carryover, that is, the high concentration of 1200 ppm injected into the mobile phase.
- the vibration frequencies of the ultrasonic vibrator were set at 10 kHz, 20 kHz, 30 kHz, 40 kHz, 50 kHz, 60 kHz, 70 kHz, 80 kHz, 90 kHz, 100 kHz, and 120 kHz, respectively.
- the output of the ultrasonic vibrator was 50 W.
- Figure 15 shows the result of the carry-over variation with respect to the vibration frequency of the ultrasonic transducer.
- the vibration frequency of the ultrasonic vibrator is 20 kHz or more and 80 kHz or less
- carry-over becomes small. It was confirmed that when the vibration frequency of the ultrasonic vibrator was less than 20 kHz or more than 80 kHz, the carryover became slightly larger. That is, when the vibration frequency of the ultrasonic transducer is 20 kHz or more and 80 kHz or less, carryover can be more efficiently reduced.
- FIG. 16 shows the relationship between the inner diameter of the sample needle and the sample retention.
- the horizontal axis in FIG. 16 indicates the inner diameter (mm) of the sample needle, and the vertical axis indicates the retention rate (%) of the standard sample held by the sample needle, that is, the superposition of the cleaning liquid in the cleaning section. Do not generate sound waves.
- the inner diameters of the sample needles were 0.18 mm, 0.42 mm, 0.50 mm, 0.80 mm, and 1.00 mm, respectively.
- the vibration frequency of the ultrasonic transducer was 80 kHz. As shown in Fig. 16, when the inside diameter of the sample needle is 0.80 mm or less, the retention rate of the standard sample held by the sample needle is approximately 100%, There was no loss of the standard sample held in the needle.
- the present invention has a cleaning means that can sufficiently reduce carryover, is simple and has a short cleaning time, and has a small influence of vibration by the cleaning means and a small error in a sample injection amount.
- the present invention can be applied to a sample injection device and a sample injection method that do not reduce the durability of the needle, and to a liquid chromatography device having the sample injection device.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US10/556,391 US7337653B2 (en) | 2003-05-15 | 2004-05-14 | Liquid chromatography specimen filling method |
JP2005506202A JP4455495B2 (ja) | 2003-05-15 | 2004-05-14 | 試料注入方法 |
CNA200480013201XA CN1788198A (zh) | 2003-05-15 | 2004-05-14 | 试样注入装置和方法、以及具有该试样注入装置的液相色谱仪 |
EP04733102.0A EP1624301B1 (en) | 2003-05-15 | 2004-05-14 | Sample injection method for liquid chromatography |
KR1020057021644A KR101100094B1 (ko) | 2003-05-15 | 2004-05-14 | 시료주입 장치 및 방법, 및 상기 시료주입 장치를 갖는액체 크로마토그래피 장치 |
US12/068,202 US7500386B2 (en) | 2003-05-15 | 2008-02-04 | Sample injection apparatus and liquid chromatography apparatus having the sample injection apparatus |
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JP2003137881 | 2003-05-15 | ||
JP2003-137881 | 2003-05-15 | ||
JP2004059713 | 2004-03-03 | ||
JP2004-059713 | 2004-03-03 |
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US10556391 A-371-Of-International | 2004-05-14 | ||
US12/068,202 Continuation US7500386B2 (en) | 2003-05-15 | 2008-02-04 | Sample injection apparatus and liquid chromatography apparatus having the sample injection apparatus |
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WO2004102182A1 true WO2004102182A1 (ja) | 2004-11-25 |
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PCT/JP2004/006555 WO2004102182A1 (ja) | 2003-05-15 | 2004-05-14 | 試料注入装置及び方法、並びに該試料注入装置を有する液体クロマトグラフィ装置 |
Country Status (6)
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US (2) | US7337653B2 (ja) |
EP (1) | EP1624301B1 (ja) |
JP (1) | JP4455495B2 (ja) |
KR (1) | KR101100094B1 (ja) |
CN (1) | CN1788198A (ja) |
WO (1) | WO2004102182A1 (ja) |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01254871A (ja) * | 1988-04-05 | 1989-10-11 | Tosoh Corp | 分析装置用分注ノズルの洗浄方法および分注ノズル装置 |
JPH08254538A (ja) * | 1995-03-16 | 1996-10-01 | Olympus Optical Co Ltd | 医療用分析機の洗浄装置 |
JPH0921730A (ja) * | 1995-07-07 | 1997-01-21 | Olympus Optical Co Ltd | 医療用分析機の分注ノズル洗浄装置 |
JPH11304779A (ja) * | 1998-04-24 | 1999-11-05 | Shimadzu Corp | 試料導入装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852417A (en) * | 1954-06-17 | 1958-09-16 | Detrex Corp | Cleaning method and apparatus |
US2992142A (en) * | 1958-01-17 | 1961-07-11 | Detrex Chem Ind | Ultrasonic cleaning method |
US2992152A (en) * | 1959-09-25 | 1961-07-11 | Chapman Ralph | Method of forming a board product |
US4216671A (en) * | 1974-06-14 | 1980-08-12 | Metropolitan Sanitary District Of Greater Chicago | Automatic cleaning of sensing probes |
US5056464A (en) * | 1990-01-18 | 1991-10-15 | Embrex, Inc. | Automated injection system for avian embryos with advanced fluid delivery system |
CN2133370Y (zh) | 1992-05-04 | 1993-05-19 | 潘宁 | 磁波清洗机 |
US6328828B1 (en) * | 1997-08-08 | 2001-12-11 | Lester Lee Rusczyk | Ultrasonic process and ultraclean product of same |
JPH11230989A (ja) * | 1997-12-10 | 1999-08-27 | Mitsubishi Electric Corp | プローブカード用プローブ針のクリーニング方法およびクリーニング装置とそれに用いる洗浄液 |
US6913934B2 (en) * | 1998-08-13 | 2005-07-05 | Symyx Technologies, Inc. | Apparatus and methods for parallel processing of multiple reaction mixtures |
US6759014B2 (en) * | 2001-01-26 | 2004-07-06 | Symyx Technologies, Inc. | Apparatus and methods for parallel processing of multiple reaction mixtures |
JP2001170538A (ja) * | 1999-12-16 | 2001-06-26 | Juki Corp | 接着剤塗布装置 |
US7521245B1 (en) * | 2000-06-05 | 2009-04-21 | Perkinelmer Las, Inc. | Method for washing and drying pins in microarray spotting instruments |
JP2002228668A (ja) * | 2001-01-31 | 2002-08-14 | Shimadzu Corp | オートサンプラ |
US6719850B2 (en) * | 2002-01-11 | 2004-04-13 | Connoisseurs Products Corp. | Sonic jewelry cleaner |
JP2004325398A (ja) * | 2003-04-28 | 2004-11-18 | Hitachi Software Eng Co Ltd | 連続吸入用ニードル及び連続吸入装置 |
-
2004
- 2004-05-14 CN CNA200480013201XA patent/CN1788198A/zh active Pending
- 2004-05-14 KR KR1020057021644A patent/KR101100094B1/ko active IP Right Grant
- 2004-05-14 WO PCT/JP2004/006555 patent/WO2004102182A1/ja active Application Filing
- 2004-05-14 EP EP04733102.0A patent/EP1624301B1/en active Active
- 2004-05-14 JP JP2005506202A patent/JP4455495B2/ja active Active
- 2004-05-14 US US10/556,391 patent/US7337653B2/en active Active
-
2008
- 2008-02-04 US US12/068,202 patent/US7500386B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01254871A (ja) * | 1988-04-05 | 1989-10-11 | Tosoh Corp | 分析装置用分注ノズルの洗浄方法および分注ノズル装置 |
JPH08254538A (ja) * | 1995-03-16 | 1996-10-01 | Olympus Optical Co Ltd | 医療用分析機の洗浄装置 |
JPH0921730A (ja) * | 1995-07-07 | 1997-01-21 | Olympus Optical Co Ltd | 医療用分析機の分注ノズル洗浄装置 |
JPH11304779A (ja) * | 1998-04-24 | 1999-11-05 | Shimadzu Corp | 試料導入装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1624301A4 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8187535B2 (en) | 2004-06-14 | 2012-05-29 | Parker-Hannifin Corporation | Robotic handling system and method with independently operable detachable tools |
EP1843153A1 (en) * | 2005-01-24 | 2007-10-10 | Shiseido Company, Limited | Sample injector, sample injecting method and liquid chromatography equipment |
EP1843153A4 (en) * | 2005-01-24 | 2009-09-02 | Shiseido Co Ltd | SAMPLE INJECTOR, SAMPLE INJECTION METHOD AND DEVICE FOR LIQUID CHROMATOGRAPHY |
US8057756B2 (en) | 2005-01-28 | 2011-11-15 | Parker-Hannifin Corporation | Sampling probe, gripper and interface for laboratory sample management systems |
WO2007117321A2 (en) * | 2005-12-08 | 2007-10-18 | Parker-Hannifin Corporation | Syringe wash station for analytical applications |
WO2007117321A3 (en) * | 2005-12-08 | 2008-03-27 | Parker Hannifin Corp | Syringe wash station for analytical applications |
JP2007309938A (ja) * | 2006-05-17 | 2007-11-29 | Amr Inc | サンプルインジェクション用ニードルユニットおよびそれを用いたシリンジのサンプル吸引、洗浄装置 |
JP4522432B2 (ja) * | 2006-05-17 | 2010-08-11 | エーエムアール株式会社 | サンプルインジェクション用ニードルユニットおよびそれを用いたシリンジのサンプル吸引、洗浄装置 |
JP2009002672A (ja) * | 2007-06-19 | 2009-01-08 | Hitachi High-Technologies Corp | クロマトグラフ装置用試料導入方法及び装置 |
WO2017130430A1 (ja) * | 2016-01-26 | 2017-08-03 | 株式会社島津製作所 | クロマトグラフ装置 |
JP2018048892A (ja) * | 2016-09-21 | 2018-03-29 | 株式会社日立ハイテクノロジーズ | 自動分析装置 |
Also Published As
Publication number | Publication date |
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US7337653B2 (en) | 2008-03-04 |
CN1788198A (zh) | 2006-06-14 |
JP4455495B2 (ja) | 2010-04-21 |
US20060213257A1 (en) | 2006-09-28 |
US7500386B2 (en) | 2009-03-10 |
EP1624301A4 (en) | 2008-03-26 |
KR101100094B1 (ko) | 2011-12-29 |
US20080141762A1 (en) | 2008-06-19 |
EP1624301B1 (en) | 2013-10-30 |
JPWO2004102182A1 (ja) | 2006-07-13 |
EP1624301A1 (en) | 2006-02-08 |
KR20060012290A (ko) | 2006-02-07 |
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