CN203227328U

CN203227328U - Molecular imprinting probe solid phase microextraction device

Info

Publication number: CN203227328U
Application number: CN 201320253835
Authority: CN
Inventors: 张艺茹; 董玉瑛; 刘长宏; 王天意; 李迎迎
Original assignee: Dalian Nationalities University
Current assignee: Dalian Minzu University
Priority date: 2013-05-10
Filing date: 2013-05-10
Publication date: 2013-10-09
Anticipated expiration: 2023-05-10

Abstract

The utility model discloses a molecular imprinting probe solid phase microextraction device belonging to the field of extraction technologies. The molecular imprinting probe solid phase microextraction device comprises a probe lever and an adjusting lever; a part of probe lever is arranged inside the adjusting lever which has a hollow structure, a probe tube is arranged at one end of the probe lever, a fixed screw cap is arranged at one end of the adjusting lever, a probe sheath tube penetrates through the fixed screw cap and is fixed with the fixed screw cap, the probe tube can penetrate out of the probe sheath tube, and a probe fiber head is arranged at the end part of the probe tube; an adjusting screw is arranged on the probe lever inside the adjusting lever, the probe lever and the adjusting screw are movably connected, a guide groove is formed in the adjusting lever, and the adjusting screw is arranged in the guide groove and matched with one edge of the guide groove in an engaging manner.

Description

A kind of molecular engram probe solid-phase micro-extracting device

Technical field

The utility model relates to a kind of molecular engram probe solid-phase micro-extracting device, belongs to the abstraction technique field.

Background technology

For efficient, quick, high selectivity are extracted the polluter in the environmental sample, overcome conventional extraction processes in complex operation step, the processing time is long, consumption of organic solvent is big shortcoming, the utility model exploitation molecular engram-probe SPME (Fiber MI-SPME) device, core is at raphioid fiber coating last layer molecularly imprinted polymer (MIP), this extraction equipment is realized the consumption of organic solvent zero demand, is a kind of eco-friendly extraction equipment.

Summary of the invention

The utility model is at the proposition of above problem, and develops a kind of molecular engram probe solid-phase micro-extracting device.

A kind of molecular engram probe solid-phase micro-extracting device comprises probe rod and adjusting rod; The part of probe rod is in adjusting rod inside, adjusting rod is the structure of hollow, one end of probe rod arranges the probe needle tubing, one end of adjusting rod arranges hold-doun nut, the hold-doun nut that passes of probe sheath pipe is also fixed with it, the probe needle tubing can pass from the probe sheath pipe, in the end of probe needle tubing the probe fiber head is set; On the probe rod of adjusting rod inside set screw is set, probe rod and set screw flexibly connect, and gathering sill is set on the adjusting rod, and set screw cooperates by screw-threaded engagement in gathering sill and with an edge of gathering sill.

The utility model principle: the probe fiber head of this device is to be coated with the various resistant to elevated temperatures molecularly imprinted polymer fixers of stain at quartz fibre or wire surface, utilizes to be coated with and leaves the realization of corresponding hole in the stain layer to the extraction of pollutant.

The utility model beneficial effect: 1, the probe fiber head has good extraction or adsorptivity to volatilization and half volatile sample, is particularly suitable for the assay determination of the volatilizable or sample that partly volatilizees in the gas, liquid, solid sample; 2, finish from the process that is extracted into analysis is general and only need tens minutes, in addition faster; 3, the extractor volume is little, can directly extract fast from atmosphere and water sample, takes back the laboratory easily and directly analyzes; 4, to the extraction of test substance, enrichment, desorb in one, avoided sampling, enrichment in traditional sample pretreatment process, preserve and the inconvenience of eliminating steps such as interference.Cause is without the need for the machine solvent, so be the sample pre-treatments technology of " green ".

Description of drawings

Fig. 1 is external structure sketch of the present utility model.

Fig. 2 is cutaway view of the present utility model.

Among the figure: 1. probe rod, 2. adjusting rod, 3. set screw, 4. gathering sill, a 5. end of probe rod, 9. hold-doun nut, 10. probe sheath pipe, 11. probe needle tubings, 12. probe fiber heads.

The specific embodiment

As shown in Figures 1 and 2:

A kind of molecular engram probe solid-phase micro-extracting device, comprise probe rod 1 and adjusting rod 2, it is characterized in that: the part of probe rod 1 is in adjusting rod 2 inside, adjusting rod 2 is the structure of hollow, one end 5 of probe rod arranges probe needle tubing 11, and an end of adjusting rod 2 arranges hold-doun nut 9, and the hold-doun nut 9 that passes of probe sheath pipe 10 is also fixed with it, probe needle tubing 11 can pass from probe sheath pipe 10, in the end of probe needle tubing 11 probe fiber head 12 is set; On the probe rod 1 of adjusting rod 2 inside set screw 3 is set, probe rod 1 flexibly connects with set screw 3, and as shown in Figure 2: gathering sill 4 is set on the adjusting rod 2, and set screw 3 is passed through threaded engagement at gathering sill 4 and with an edge of gathering sill 4.

When device uses, probe fiber head 12 is exposed in the pollutant behind the sampling balance certain hour, that utilizes adjusting rod 2 can regulate the position of probe rod l to guide groove 4 and the threaded engagement of set screw 3, can regain fiber head 12 in the probe sheath pipes 10.After probe portion being inserted the injection port of gas-chromatography, again fiber head 12 is leant out and be exposed in the injection port pyrolysis and analyse, again fiber head 12 is regained probe sheath pipes 10 after desorb finishes, extract from injection port again.So just, finished the single injected sampling process.

The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.

Claims

1. molecular engram probe solid-phase micro-extracting device, comprise probe rod (1) and adjusting rod (2), it is characterized in that: the part of probe rod (1) is in adjusting rod (2) inside, adjusting rod (2) is the structure of hollow, one end (5) of probe rod arranges probe needle tubing (11), one end of adjusting rod (2) arranges hold-doun nut (9), the hold-doun nut (9) that passes of probe sheath pipe (10) is also fixed with it, probe needle tubing (11) can pass from probe sheath pipe (10), in the end of probe needle tubing (11) probe fiber head (12) is set; On the probe rod (1) of adjusting rod (2) inside set screw (3) is set, probe rod (1) flexibly connects with set screw (3), gathering sill (4) is set on the adjusting rod (2), and set screw (3) is passed through engagement fit in gathering sill (4) and with an edge of gathering sill (4).