CN206362811U - A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus - Google Patents
A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus Download PDFInfo
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- CN206362811U CN206362811U CN201621332670.4U CN201621332670U CN206362811U CN 206362811 U CN206362811 U CN 206362811U CN 201621332670 U CN201621332670 U CN 201621332670U CN 206362811 U CN206362811 U CN 206362811U
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Abstract
A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus, is connected with quantitative capillary tube electrophoresis apparatus, including nanoliter level proportional valve, automatic soda acid activation/cleaning device, be electrically isolated groove post on power-up device, automatic sampling stream and sample tray；Wherein, nanoliter level proportional valve is used to realize nanoliter level accurate quantitative analysis sample introduction, it is made up of rotatable built-in quantitative loop and the fixation outer shroud with four fixed ports, automatic soda acid activation/cleaning device is used for the activation and cleaning for the separation capillary column for realizing quantitative capillary tube electrophoresis apparatus, include six end liquid distributors, separator tube and syringe pump, some sample bottles are placed with sample tray, automatic sampling stream is used to extract sample, including sampling probe, rinse bath, reagent bottle, external four connectors and additional constant flow pump, being electrically isolated power-up device on groove post includes being electrically isolated groove, separation capillary column is connected with nanoliter level proportional valve and realizes that power-up forms high voltage electric field on post through the electric isolution groove.The utility model has the advantages that favorable reproducibility, precision are high, discriminate against and cross pollution without component.
Description
Technical field
The utility model is related to a kind of test device, and in particular to a kind of auto injection for quantitative capillary tube electrophoresis apparatus
Device, belongs to analysis and testing technology field.
Background technology
Capillary Electrophoresis (CE) is also known as HPCE, is developed after modern efficient liquid chromatography technology
A kind of new and effective isolation technics come.CE because of it efficiently, more than quick, low cost, operator scheme and the advantages of being easy to switching,
It is widely used in terms of separate analytical technique field, such as environmental protection, Pharmaceutical Analysis, life science and food security.However,
CE market approval rate is actually all the time not as good as high performance liquid chromatography (HPLC), and its main cause is the sample injection method of CE " dipping "
In the presence of many defects, thus cause quantitatively to be forbidden, the deficiency such as poor accuracy.
CE input modes mainly include two kinds of electromigration injection and hydrodynamics sample introduction, and the former is former according to electrophoresis and EOF
Reason and it is commonly used.Because sample each component has different electrophoretic mobilities, the matter that the big component of mobility enters in capillary
Smaller than the mobility component of amount is more, therefore causes a greatest drawback of electromigration injection to be to produce component to different charged species
Discriminate against.The sample size size of hydrodynamics input mode be by change capillary pass in and out two mouths of pipe between potential difference or pressure difference with
And action time is realized.But the size of pressure is influenceed by temperature and mechanical strength, it is difficult to accurate control, this can cause into
The accuracy and reappearance of sample be not high.In addition, above-mentioned sample injection method be both needed to by capillary end sample and buffer solution it
Between switch movement, easily cause cross pollution and can not continuously be analyzed, it is often more important that can not accurately know sample size, this
Showed inferiority entirely in quantitative analysis field.
Utility model content
Technical problem to be solved in the utility model is on the basis of existing HPLC automatic sampler technology, to draw
Enter nanoliter level proportional valve and be electrically isolated electricity applying system being used for calmly there is provided a kind of achievable nanoliter level accurate quantitative analysis sample introduction on groove post
The automatic sampler of HPCE is measured, HPCE is realized high-precision quantitative sample introduction, favorable reproducibility；Can continuously it exist
Line analysis, without power-off, reduces error；Eliminate the discrimination and cross pollution between different sample components.
The scheme that the utility model solves its technical problem is as follows：
A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus, is connected with the quantitative capillary tube electrophoresis apparatus, and this is determined
HPCE is measured provided with separation capillary column, it is characterised in that：The automatic sampler includes nanoliter level proportional valve, automatic
Power-up device, automatic sampling stream and sample tray in soda acid activation/cleaning device, electric isolution groove post；
The nanoliter level proportional valve is used to realize nanoliter level accurate quantitative analysis sample introduction, by a rotatable built-in quantitative loop and
Fixation outer shroud composition with four fixed ports, the built-in quantitative loop, which is internally provided with a sample introduction path and one, to be had accurately admittedly
The load path of constant volume, with the rotation of the built-in quantitative loop, the sample introduction path and load path and four fixing ends
Mouth switches over connection；
The automatic soda acid activation/cleaning device is used for the activation and cleaning for realizing the separation capillary column, includes
Six end liquid distributors, separator tube and syringe pump, six end liquid distributor have an entrance and can be with the entrances
Six distribution outlets of connection are changed in turn, wherein, entrance connects one end of the separator tube, and a distribution outlet connection is described
One fixed port of nanoliter level proportional valve, three distribution outlets connect three and are equipped with to clean and balance the separation respectively
The washer bottle of the different reagents of capillary column, the syringe pump, which is furnished with, allows hand over three ends point for completing exhaust and cleaning function
With valve, three valve interfaces of the three ends distributing valve connect automatic sampler washer bottle, automatic sampler waste liquid bottle and described respectively
Separator tube, exhaust and cleaning function are completed to switch；
Some sample bottles are placed with the sample tray；
The automatic sampling stream is used to extract sample, including sampling probe, rinse bath, reagent bottle, external four connectors
With additional constant flow pump, the sampling probe allows hand over the insertion sample bottle to extract sample and the rinse bath to complete to this
The cleaning of sampling probe, the ports of external four connectors connect respectively a fixed port of the nanoliter level proportional valve,
One distribution outlet of six end liquid distributor and the additional constant flow pump；
Power-up device includes being electrically isolated groove, the separation capillary of the quantitative capillary tube electrophoresis apparatus on the electric isolution groove post
Post is connected with a fixed port of the nanoliter level proportional valve, and realizes that power-up forms high on post through the electric isolution groove
Piezoelectric field.
Further, described electric isolution groove is supported on electric isolution groove support, and the electric isolution groove support is fixed on described
On the upper lid of automatic sampler.
Further, three described washer bottles are respectively provided with the HCl or NaOH solution of suitable concentration.
Further, described automatic sampler is by automated software control, realizes nanoliter level quantitative sample injection and activation/clear
Wash the function of the separation capillary column.
Compared with prior art, effect of the present utility model is：
1. the input mode using unique nanoliter level proportional valve has evaded conventional capillary electrophoresis tube input mode (electromigration
Sample introduction, hydrodynamics sample introduction) deficiency, have the advantages that low sample size, favorable reproducibility, precision are high；
2. described in automatic sampler can whole on-line analysis detection, it is to avoid component is discriminated against and cross-contamination phenomena；
3. the utility model realizes full-automation, convenience simple to operation is detected rapidly and efficiently.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is one of course of work schematic diagram of the present utility model.
Fig. 3 is the two of course of work schematic diagram of the present utility model.
Fig. 4 is the three of course of work schematic diagram of the present utility model.
Fig. 5 is the four of course of work schematic diagram of the present utility model.
In figure,
1 nanoliter level proportional valve, 2 separation capillary columns, 3 external four connectors, 4 six end liquid distributors, 5 sampling probes, 6
Washer bottle, 7 washer bottles, 8 washer bottles, 9 syringe pumps, 10 separator tubes, 11 3 end distributing valves, 12 automatic sampler washer bottles, 13
Automatic sampler waste liquid bottle, 14 first distribution outlets, 15 second distribution outlets, 16 the 3rd distribution outlets, 17 the 4th distribution outlets,
18 the 5th distribution outlets, 19 the 6th distribution outlets, 20. sample trays, 21 reagent bottles, 22 rinse baths, 23 additional constant flow pumps, 24 electricity
Isolation channel, 25 load paths, 26 sample introduction paths, 27 are electrically isolated groove support.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, it is still, described here of the present utility model specific
Embodiment is only used for explaining the purpose of this utility model, all according to this explanation not for limiting scope of the present utility model
Equivalence changes and modification that the content of book is made, are regarded as the claimed scope of the utility model patent application.
Referring to Fig. 1, the automatic sampler described in the utility model for quantitative capillary tube electrophoresis apparatus and quantitative capillary
The connection of electrophoresis tube instrument is used, and nanoliter level accurate quantitative analysis sample introduction can be achieved, the quantitative capillary tube electrophoresis apparatus is provided with separation capillary column
2。
The automatic sampler on nanoliter level proportional valve 1, automatic soda acid activation/cleaning device, electric isolution groove post including adding
Electric installation, automatic sampling stream and sample tray 20.
The nanoliter level proportional valve 1 is that 2 nanoliters of cuts to hundreds of nanoliters of a variety of different sizes through laser ablation are determined
Ring is measured, for realizing nanoliter level accurate quantitative analysis sample introduction；The nanoliter level proportional valve 1 is by a rotatable built-in quantitative loop and has
The fixation outer shroud composition of four fixed ports；The built-in quantitative loop, which is internally provided with a sample introduction path 26 and one, has accurate fix
The load path 25 of volume, wherein load path 25 realize sample accurate quantification, and sample introduction path 26 realizes that sample detection is analyzed.Institute
Four fixed ports are stated respectively with separating capillary column 2, a port of external four connectors 3, six end liquid distributors 4
6th distribution outlet 19 is connected with sampling probe 5.With the rotation of the built-in quantitative loop, the sample introduction path 26 and load path 25 with
Four fixed ports of the fixed outer shroud switch over connection.
The automatic soda acid activation/cleaning device is used for the activation and cleaning for realizing the separation capillary column 2.This is automatic
Soda acid activation/cleaning device includes six end liquid distributors 4, separator tube 10 and syringe pump 9.Six end liquid distributor
4 have an entrance and can change six distribution outlets being connected in turn with the entrance：First distribution outlet 14, second is distributed
The distribution outlet 18 of the 16, the 4th distribution outlet of the distribution outlet of outlet the 15, the 3rd the 17, the 5th and the 6th distribution outlet 19；Wherein, entrance
One end of the separator tube 10 is connected, first distribution outlet the 14, second distribution outlet 15 and the 3rd distribution outlet 16 are connected respectively
Three washer bottles 6,7 and 8, the washer bottle 6,7 and 8 is respectively provided with the HCl of suitable concentration or the different reagents of NaOH solution, is used to
The separation capillary column 2 is activated and cleans, and pipeline is the capillary column dedicated line accurately determined, the 4th distribution outlet 17
Waste liquid end is connected, a port of external four connectors 3 of connection of the 5th distribution outlet 18, the connection of the 6th distribution outlet 19 is described
One fixed port of nanoliter level proportional valve 1.The syringe pump 9 is furnished with three end distributing valves 11, the three of the three ends distributing valve 11
Individual valve interface connects automatic sampler washer bottle 12, automatic sampler waste liquid bottle 13 and the separator tube 10 respectively, to switch
Complete exhaust and cleaning function.
The sample tray 20 is placed with the sample equipped with different samples containing 84 sample bottle positions and 3 reagent bottle positions
Bottle, the sample tray 20 is once fully loaded with sustainable operation more than 14 hours (being free of the scavenging period between sample), easily full
The foot experimental work of one day.
The automatic sampling stream is used to extract sample, including sampling probe 5, rinse bath 22, reagent bottle 21, external four leads to
Connect device 3 and additional constant flow pump 23.The sampling probe 5, which has, punctures function, can be inserted with the switching of XYZ tendencies the sample bottle with
Sample and the rinse bath is extracted to complete the cleaning to the outer wall and inwall of the sampling probe 5.External four connectors 3
Port connects the 5th distribution outlet of a fixed port of the nanoliter level proportional valve 1, six end liquid distributor 4 respectively
18 and the additional constant flow pump 23.The external constant flow pump 23 provides the power of a mitigation, promotes sample from sample introduction path 26
Into in separation capillary column 2.
Power-up device is located at the rear end of nanoliter level proportional valve 1 on the electric isolution groove post, separates the front end of capillary column 2,
And be connected with the nanoliter level proportional valve 1.Power-up device includes being electrically isolated groove 24 and is electrically isolated groove support 27 on the electric isolution groove post,
The separation capillary column 2 of the quantitative capillary tube electrophoresis apparatus is connected with a fixed port of the nanoliter level proportional valve 1, leads to
The nanoliter level proportional valve 1 is crossed to realize after accurate quantitative sample injection, it is ingenious to be achieved through the electric isolution groove 24 for being inserted with electrode
Powered up in entrance newel post, with port of export high pressure formation path, high voltage electric field is formed in the separation capillary column 2.Described electricity
Isolation channel 24 has conductive not drain characteristic, realizes the separation capillary column 2 and is powered up on post, has overturned conventional capillary electricity
Instrument two end electrodes of swimming insert the pattern that two surge flasks realize power-up.Described electric isolution groove 24 is supported in electric isolution groove support 27
On, fallen damage separation capillary column 2 to prevent being electrically isolated groove 24, the electric isolution groove support 27 is fixed on the automatic sampler
On upper lid.
The automatic sampler introduces nanoliter level proportional valve 1, automatic soda acid activation/cleaning device and is electrically isolated on groove post
Any one in power-up device or two or three of device.
Described automatic sampler is realized and divided described in nanoliter level quantitative sample injection and activation/cleaning by automated software control
From the function of capillary column 2.
The operation principle of automatic sampler described in the utility model is as follows：
First, cleaning, exhaust process, referring to Fig. 2.The entrance of six end liquid distributor 4 and the 5th distribution outlet 18
Connection, the nanoliter level proportional valve 1 is in sample introduction path 26, under the effect of syringe pump 9, in automatic sampler washer bottle 12
Cleaning fluid is extracted, separator tube 10 and external four connectors 3 is flowed through, into nanoliter level proportional valve 1, separation capillary column 2 is flowed through
To the port of export, the exhaust and cleaning of pipeline are completed.
Secondly, sampling process, referring to Fig. 3.The built-in quantitative loop of the nanoliter level proportional valve 1 rotates 180 °, switches it
To load path 25, first movement is inserted into reagent bottle 21 sampling probe 5, and a certain amount of buffer solution is sucked under the effect of syringe pump 9,
Then sampling probe 5 is moved to sample tray 20, draws a certain amount of sample, movement is inserted into reagent bottle 21 to last sampling probe 5 again,
Draw a certain amount of buffer solution.During this sample introduction, amount of buffer and sample size make sample coat completely just by programme-control
And full load path 25 is filled, and this sample introduction process dramatically reduces amount of samples.
Then, sample introduction process, referring to Fig. 4.The built-in quantitative loop of the nanoliter level proportional valve 1 rotates 180 °, switch into
Sample path 26.The sample for being stored in built-in quantitative loop is pushed into separation capillary column 2 in the presence of additional constant flow pump 23, by electricity
Isolation channel 24, realizes and is powered up on post, under electric field and the double reaction plus of additional constant flow pump 23, realizes and separates and pass through external detection
Device detection, computer digital animation software are acquired, analyzed.At the same time, built-in quantitative loop rotates 180 °, is switched to again
Load path 25；Sampling probe 5 is moved in rinse bath 22, in the presence of syringe pump 9, and sampling probe 5 enters in rinse bath 22
Row cleaning.
Finally, complete after electrophoretic analysis, separation capillary column 2 must be cleaned, balanced, referring to Fig. 5.The first step, it is described
The entrance of six end liquid distributors 4 is connected with the first distribution outlet 14.Will be clear in washer bottle 6 in the presence of syringe pump 9
Washing lotion sucks separator tube 10；The conversion of six end liquid distributor 4 is connected to the 5th distribution outlet 18, the syringe pump 9
By the cleaning fluid push-in nanoliter level proportional valve 1 in separator tube 10 and into separating in capillary column 2, complete to separation capillary column
HCl cleanings and the balance of 2 suitable concentration；Second step, the entrance of six end liquid distributor 4 and the second distribution outlet 15 connect
It is logical.The cleaning fluid in washer bottle 7 is sucked into separator tube 10 in the presence of syringe pump 9；Six end liquid distributor 4 is changed
Connected to the 5th distribution outlet 18, the cleaning fluid in separator tube 10 is pushed into nanoliter level proportional valve 1 and gone forward side by side by the syringe pump 9
Enter to separate in capillary column 2, complete the NaOH cleanings of the high concentration to separating capillary column 2 and balance；3rd step, six end
The entrance of liquid distributor 4 is connected with the 3rd distribution outlet 16.The reagent in washer bottle 8 is inhaled in the presence of syringe pump 9
Enter separator tube 10；The conversion of six end liquid distributor 4 is connected to the 5th distribution outlet 18, and the syringe pump 9 will be buffered
Cleaning fluid in pipe 10 is pushed into nanoliter level proportional valve 1 and entered in separation capillary column 2, completes to the low of separation capillary column 2
NaOH cleanings and the balance of concentration.
The automatic sampler recovers to original state, the separation analysis of the standby next sample of preparation.
In the above-mentioned course of work, the function of all components of automatic sampler is realized entirely certainly by computer control
Dynamic operation.
Claims (4)
1. a kind of automatic sampler for quantitative capillary tube electrophoresis apparatus, is connected with the quantitative capillary tube electrophoresis apparatus, this is quantified
HPCE is provided with separation capillary column, it is characterised in that：The automatic sampler includes nanoliter level proportional valve, automatic acid
Power-up device, automatic sampling stream and sample tray in alkali activation/cleaning device, electric isolution groove post；
The nanoliter level proportional valve is used to realize nanoliter level accurate quantitative analysis sample introduction, by a rotatable built-in quantitative loop and has
The fixation outer shroud composition of four fixed ports, the built-in quantitative loop, which is internally provided with a sample introduction path and one, has accurate fixed appearance
Long-pending load path, with the rotation of the built-in quantitative loop, the sample introduction path and load path are entered with four fixed ports
Row is switched on；
The automatic soda acid activation/cleaning device is used for the activation and cleaning for realizing the separation capillary column, includes six ends
Liquid distributor, separator tube and syringe pump, six end liquid distributor have an entrance and can be with the entrances in turn
Six distribution outlets of conversion connection, wherein, entrance connects one end of the separator tube, described nanoliter of a distribution outlet connection
One fixed port of level proportional valve, three distribution outlets connect three and are equipped with to clean and balance the separation capillary respectively
The washer bottle of the different reagents of tubing string, the syringe pump, which is furnished with, allows hand over the three ends distribution for completing exhaust and cleaning function
Valve, three valve interfaces of the three ends distributing valve connect automatic sampler washer bottle, automatic sampler waste liquid bottle and described slow respectively
Washing pipe, exhaust and cleaning function are completed to switch；
Some sample bottles are placed with the sample tray；
The automatic sampling stream is used to extract sample, including sampling probe, rinse bath, reagent bottle, external four connectors and outer
Plus constant flow pump, the sampling probe, which is allowed hand over, to be inserted the sample bottle to extract sample and the rinse bath to complete to the sampling
The cleaning of pin, the ports of external four connectors connects a fixed port of the nanoliter level proportional valve respectively, described
One distribution outlet of six end liquid distributors and the additional constant flow pump；
It is described electric isolution groove post on power-up device include be electrically isolated groove, the separation capillary column of the quantitative capillary tube electrophoresis apparatus with
One fixed port of the nanoliter level proportional valve is connected, and realizes that power-up forms high-tension electricity on post through the electric isolution groove
.
2. the automatic sampler according to claim 1 for quantitative capillary tube electrophoresis apparatus, it is characterised in that：Described electricity
Isolation channel is supported on electric isolution groove support, and the electric isolution groove support is fixed on the upper lid of the automatic sampler.
3. the automatic sampler according to claim 1 for quantitative capillary tube electrophoresis apparatus, it is characterised in that：Described three
Individual washer bottle is respectively provided with the HCl or NaOH solution of suitable concentration.
4. the automatic sampler according to claim 1 for quantitative capillary tube electrophoresis apparatus, it is characterised in that：It is described from
Dynamic injector realizes the function of nanoliter level quantitative sample injection and activation/cleaning separation capillary column by automated software control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621332670.4U CN206362811U (en) | 2016-12-07 | 2016-12-07 | A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332670.4U CN206362811U (en) | 2016-12-07 | 2016-12-07 | A kind of automatic sampler for quantitative capillary tube electrophoresis apparatus |
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| CN206362811U true CN206362811U (en) | 2017-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760420A (en) * | 2018-05-08 | 2018-11-06 | 湖北工业大学 | A kind of sample pre-treatments platform with ultrasonic extraction function |
| CN109115579A (en) * | 2018-10-16 | 2019-01-01 | 湖北工业大学 | A kind of high throughput sample pre-treatments platform and liquid feeding method |
-
2016
- 2016-12-07 CN CN201621332670.4U patent/CN206362811U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760420A (en) * | 2018-05-08 | 2018-11-06 | 湖北工业大学 | A kind of sample pre-treatments platform with ultrasonic extraction function |
| CN109115579A (en) * | 2018-10-16 | 2019-01-01 | 湖北工业大学 | A kind of high throughput sample pre-treatments platform and liquid feeding method |
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