CN2887401Y

CN2887401Y - Solid phase micro extraction and resolution device

Info

Publication number: CN2887401Y
Application number: CN 200520099378
Authority: CN
Inventors: 曾昭睿; 方怀防; 周兴旺; 刘名茗
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2005-12-16
Filing date: 2005-12-16
Publication date: 2007-04-11
Anticipated expiration: 2015-12-16

Abstract

The utility model relates to a solid-phase micro-extraction test-device which at least comprises a pull-rod, a pin-cylinder style test-tank with scales, a pinhead and a sealing mat. The utility model has the advantages of that the structure is simple; the operation is easy; the functions of collecting testing chemicals, testing and taking samples are integrated together; the cubage of the test chemical is accurate and adjustable; the test chemicals can be used with a liquid-phase chromatogram and a capillary electrophoresis and then an excellent analyzing-recurring result can be gotten.

Description

A kind of SPME resolver

Technical field:

The utility model relates to a kind of SPME resolver of simple and easy practicality, belongs to analytical chemistry, the sample pre-treatments technology.

Background technology:

Solid phase micro-extraction technique is a kind of centralized procurement sample of growing up in recent decades, extraction, concentrate, sample introduction, parsing sample pre-treatments new method.During detection technique couplings such as SPME and high performance liquid chromatography, Capillary Electrophoresis, often need to carry out the parsing of sample on the extracting fiber.At present the SPME solvolysis analysis method desorbed solution volume that uses is bigger, fail 100% be used for the sample introduction analysis; The parsing time is long, and sensitivity for analysis is lower and reappearance is relatively poor.

Summary of the invention:

For solving present problems of the prior art, the utility model provides a kind of SPME resolver of simple and easy practicality, and it has simple in structure, convenience operation, and the desorbed solution volume is accurately adjustable, analyzes the advantage of favorable reproducibility.

The technical solution adopted in the utility model is: this SPME resolver at least by pull bar, have scale, the syringe-type of capacity between 10 μ l-2mL resolve pond, syringe needle, sealing gasket and form, pull bar can slide along resolving the pond barrel, be sealing state between pull bar bar wall and parsing pond barrel, syringe needle is installed on resolves the lower end, pond, and with resolve the pond and be communicated with, sealing gasket is used for the needle point of blockade needle lower end.

From said structure of the present utility model as can be known, this SPME resolver is simple in structure, device is easy to establishment, easy to operate, and the desorbed solution volume is accurately adjustable, resolves the pond by changing dissimilar syringe-types, and the volume of desorbed solution can be from 2 μ l-1ml.

Because can resolving the pond toward the syringe-type that indicates scale by syringe needle, pull bar, the utility model pipettes quantitative desorbed solution again, needle point is removed pull bar after sealing with sealing gasket, place the parsing pond to resolve the solid phase micro-extraction extraction head after the extraction, after finishing, parsing takes off sealing gasket, but desorbed solution is direct injected just, therefore this device has to integrate and gets desorbed solution, parsing and sample introduction function, and desorbed solution can all be collected and be used for sample introduction, with the advantage of liquid chromatogram, Capillary Electrophoresis coupling analysis favorable reproducibility.

Description of drawings

Fig. 1 is the structural representation of SPME resolver of the present utility model.

Fig. 2 gets a certain amount of desorbed solution is resolved the pond to syringe-type schematic diagram.

Fig. 3 makes extracting fiber immerse the schematic diagram of resolving solution.

Fig. 4 is pressed into the schematic diagram of sample cell for resolving parsing solution in the pond with pull bar.

Among the figure: 1, pull bar; 2, syringe-type is resolved the pond; 3, syringe needle; 4, sealing gasket; 5, solid phase micro-extraction device

The specific embodiment

As shown in Figure 1, the SPME resolver that the utility model provides at least by pull bar 1, have scale, the syringe-type of capacity between 10 μ l-2mL resolve pond 2, syringe needle 3, sealing gasket 4 and form, pull bar 1 can slide along resolving pond 2 barrels, be sealing state between pull bar 1 bar wall and parsing pond 2 barrels, syringe needle 3 is installed on resolves 2 lower ends, pond, and with resolve pond 2 and be communicated with, sealing gasket 4 is used for the needle point of blockade needle 3 lower ends.

Using method of the present utility model is: reached balance last minute in sample extraction, get a certain amount of desorbed solution and resolve pond 2 (see figure 2)s to syringe-type.Needle point is removed pull bar 1 after with sealing gasket 4 sealing, the probe of the solid phase micro-extraction device after the balance 5 (be prior art) is inserted syringe-type resolve pond 2, the pull bar of solid phase micro-extraction device 5 presses down, and makes extracting fiber immerse parsing solution (see figure 3); Sample is from the parsing of popping one's head in, and through certain hour, parsing reaches balance.The SPME pull bar is upwards drawn 1-2cm, and probe returns in the SPME syringe needle, removes solid phase micro-extraction device 5; Remove sealing gasket, the parsing solution of resolving in the pond 2 is pressed into the sample cell (see figure 4) with pull bar 1, carry out sample analysis.

Claims

1, a kind of SPME resolver, comprise and resolve the pond, it is characterized in that: this device is made up of pull bar, parsing pond, syringe needle, sealing gasket at least, resolving the pond is that syringe-type is resolved the pond, pull bar can slide along resolving the pond barrel, is sealing state between pull bar bar wall and parsing pond barrel, and syringe needle is installed on resolves the lower end, pond, and with resolve the pond and be communicated with, sealing gasket is used for the needle point of blockade needle lower end.

2, SPME resolver according to claim 1 is characterized in that: syringe-type is resolved the pond barrel and is marked with scale.

3, SPME resolver according to claim 1 and 2 is characterized in that: syringe-type is resolved the capacity in pond between 10 μ l-2mL.