CN108072551A - Solid phase microextraction handle - Google Patents
Solid phase microextraction handle Download PDFInfo
- Publication number
- CN108072551A CN108072551A CN201611012825.0A CN201611012825A CN108072551A CN 108072551 A CN108072551 A CN 108072551A CN 201611012825 A CN201611012825 A CN 201611012825A CN 108072551 A CN108072551 A CN 108072551A
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- China
- Prior art keywords
- handle
- push rod
- card
- core
- extraction probe
- Prior art date
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- Granted
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- 238000002470 solid-phase micro-extraction Methods 0.000 title claims abstract description 30
- 238000000605 extraction Methods 0.000 claims abstract description 93
- 239000000523 sample Substances 0.000 claims abstract description 93
- 239000002184 metal Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003795 desorption Methods 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012491 analyte Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005251 capillar electrophoresis Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 238000001785 headspace extraction Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 238000004853 microextraction Methods 0.000 description 1
- 238000002414 normal-phase solid-phase extraction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- 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
- G01N30/06—Preparation
-
- 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
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of solid phase microextraction handle, including handle push rod, handle cylinder, metal sleeve and using stainless steel wire as the extraction probe of backing material, it is characterised in that：The handle push rod and the handle cylinder are equipped with positioning card, which is connected with handle cylinder；The lower end of the handle cylinder is equipped with the metal sleeve with gasket and fixes support, which fixes support and be connected with the metal sleeve；The extraction probe sequentially passes through the metal sleeve, the gasket is connected with the handle push rod.The present invention is of low cost, easy to carry, durable, is easily changed.
Description
Technical field
The present invention relates to Sample Pretreatment Technique field more particularly to solid phase microextraction handles.
Background technology
In the analytic process to matrix complex sample, pre-treatment is essential step, but before traditional sample
Reason technology, such as liquid-liquid extraction, chromatography, distillation, Head space and solid phase extraction, with using, solvent amount is big, takes consumption
Power, easily make volatile component loss, easily to operator's health and environmental concerns the shortcomings of.Before overcoming traditional sample
The various shortcomings of reason technology, improve analysis efficiency, and researcher is developed with drop micro-extraction and solid phase microextraction（Solid
Phase Microextraction, SPME）For the novel sample pretreatment of representative.
Wherein SPME technologies integrate extraction, concentration, desorption, sample introduction, and can with gas-chromatography, gas-chromatography-
The analytical instrument such as mass spectrum, high performance liquid chromatography, capillary electrophoresis are directly combined, and have easy quick, economic security, without molten
Many advantages, such as agent, high sensitivity, selection type be good, required sample size is few, therefore have broad application prospects.So far,
SPME is widely used in the fields such as environment, food, forensic chemistry identification, by selecting suitable coating material and extraction mould
Formula, can be to a variety of mesh such as environmental contaminants, food additives, poisonous substance, drugs and the Explosive Residues in complex sample matrix
Mark analyte is extracted and separated, and substantially increases the speed of analysis detection.
At present, SPME researchs are concentrated mainly on to extracting the exploitation of coating and optimization aspect, but are controlled as extraction probe
Extraction handle with supporting carrier has a very important role during SPME, main in China market according to preliminary investigation
The solid phase microextraction handle that sale is produced by Supelco companies of the U.S., not only price is somewhat expensive, and the handle uses
Supelco companies produce special extraction probe, can not facilitate the extraction probe for installing other species, thus greatly limit SPME
Extensive use of the technology during actual analysis.
In order to improve the utilization rate of extraction handle, facilitate scientific research technical staff using various types of extraction probes, into one
It walks to exposed area of the extraction coating in extraction process and the regulation and control of position and reduction SPME costs in the sample, there is an urgent need for one kind
The solid phase microextraction handle of extraction probe that is of low cost, easy to carry, durable, being easily changed, further to expand
The extensive use of SPME technologies provides technical support.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of it is of low cost, easy to carry, durable, be easily changed
Solid phase microextraction handle.
To solve the above problems, solid phase microextraction handle of the present invention, including handle push rod, handle cylinder, metallic sheath
It manages and using stainless steel wire as the extraction probe of backing material, it is characterised in that：The handle push rod and the handle cylinder are equipped with
Positioning card, the handle push rod are connected with handle cylinder；The lower end of the handle cylinder is equipped with the metal sleeve with gasket and fixes support, should
Metal sleeve fixes support and is connected with the metal sleeve；The extraction probe sequentially passes through the metal sleeve, the gasket
It is connected with the handle push rod.
The positioning card includes the inside that links together by fixing pin, nail pin and is stained with the upper card of rubber pad I and interior
Side is stained with the lower card of rubber pad II；The inside of the upper card and the lower card is arc-shaped；The nail pin is by upper bail pin under
Bail pin bank into；The upper bail pin is connected by the fixing pin with the lower bail pin.
The handle cylinder is made of the top half and the latter half being docking together by screw thread I, in the top half
Equipped with graduation mark.
The handle push rod is connected with the handle cylinder by rubber neck I.
The extraction probe sequentially passes through the metal sleeve, the gasket and passes through extraction probe immobilising device and institute
Handle push rod is stated to be connected.
The extraction probe immobilising device includes body；The body is equipped with push rod rubber neck fixing groove I, end
Equipped with threaded II the core of the card I；The card slot of the matching of the core of the card I socket threaded III；The extraction probe sequentially passes through described
Card slot, the core of the card I；The push rod rubber neck fixing groove I is embedded with rubber neck I.
The extraction probe immobilising device includes body；The body is equipped with push rod rubber neck fixing groove II, spring
Retaining groove, the core of the card fixing groove, end are equipped with the core of the card II；The core of the card II sequentially passes through card cap, spring and the core of the card fixing groove
It is connected；The extraction probe passes through the core of the card II；The push rod rubber neck fixing groove II is embedded with rubber neck I.
The handle push rod is equipped with push rod graticule I.
The handle push rod includes outer push rod and the inner push-rod through the outer push rod；One end of the outer push rod is equipped with fixed
Position knob I, inner wall are equipped with screw thread IV, which is provided with outer push rod scale, and the other end is equipped with rubber neck card slot；The rubber
Lantern ring card slot is equipped with the rubber neck II with push rod graticule II；One end of the inner push-rod is equipped with positioning knob II, outer wall
Equipped with screw thread V, inner push-rod graticule is respectively equipped with thereon, and the other end is equipped with the core of the card III；The core of the card III sequentially passes through snap ring gear
Slot, stainless steel retainer ring；The outer push rod is equipped with rubber pad with the inner push-rod joint；The extraction probe passes through the metal
Casing, the gasket, the core of the card III are connected with the handle push rod.
The present invention has the following advantages compared with prior art：
1st, handle push rod of the present invention is equipped with extraction probe immobilising device, conveniently replaced extraction probe.
2nd, handle push rod and handle cylinder are respectively equipped with the positioning card being easily installed in the present invention, can be long to extraction probe coating
Degree and the position of extraction probe in the sample are continuously adjusted and are fixed.
3rd, the present invention as the doughnut of backing material can effectively fix to stainless steel wire and silicon oxide fibre etc.,
With good compatibility.
4th, positioning card inside is stained with rubber pad in the present invention, it is possible to increase rubbing between positioning card and handle push rod and handle cylinder
It wipes, so as to by coordinating with devices such as iron stands come effective fixed handle.
5th, it is circle on the inside of the positioning card in the present invention, it can fixed cylinder shape handle push rod and handle cylinder very well.
6th, there is scale on handle cylinder surface of the present invention, and the length of extraction probe stretching metal sleeve can be observed with reference to push rod graticule
Degree.
7th, the present invention is of low cost, easy to carry, durable.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the overall structure diagram that card is positioned in the present invention.
Fig. 3 is the structure diagram blocked in the present invention on positioning card.
Fig. 4 is the structure diagram of the lower card of positioning card in the present invention.
Fig. 5 is the structure diagram that handle cylinder is extracted in the present invention.
Fig. 6 is the structure diagram of extraction probe immobilising device in the present invention.
Fig. 7 is the extraction probe structure diagram using stainless steel wire as backing material in the present invention.
Fig. 8 is another structure diagram of the present invention.
Fig. 9 is the structure diagram of another extraction probe immobilising device in the present invention.
Figure 10 is the third structure diagram of the present invention.
Figure 11 is the structure diagram of handle push rod in the present invention.
In figure：1-handle push rod；101-outer push rod；111-positioning knob I；112-screw thread IV；113-outer push rod is carved
Degree；114-rubber neck card slot；102-inner push-rod；121-positioning knob II；122-rubber pad；123-inner push-rod graticule；
124-screw thread V；125-stainless steel retainer ring；126-snap ring retaining groove；127-the core of the card III；2-positioning card；21-fixing pin；
22-nail pin；221-upper bail pin；222-lower bail pin；23-above block；24-block down；25-rubber pad I；26-rubber pad
Ⅱ；3-handle cylinder；31-top half；32-the latter half；4-extraction probe；5-graduation mark；6-rubber neck I；7—
Push rod graticule I；8-extraction probe immobilising device；81-push rod rubber neck fixing groove I；82-screw thread II；83-the core of the card I；
84-screw thread III；811-push rod rubber neck fixing groove II；821-spring retaining groove；831-the core of the card fixing groove；861-the core of the card
Ⅱ；851-card cap；841-spring；9-metal sleeve fixes support；10-gasket；11-metal sleeve.
Specific embodiment
Embodiment 1 is as shown in Fig. 1 ~ 7, solid phase microextraction handle, including handle push rod 1, handle cylinder 3,11 and of metal sleeve
Using stainless steel wire as the extraction probe 4 of backing material.
Handle push rod 1 and handle cylinder 3 are equipped with positioning card 2, which passes through I 6 phase of rubber neck with handle cylinder 3
Even；The lower end of handle cylinder 3 is equipped with the metal sleeve with gasket 10 and fixes support 9, which fixes support 9 and metal sleeve 11
It is connected；Extraction probe 4 sequentially passes through metal sleeve 11, gasket 10 passes through extraction probe immobilising device 8 and 1 phase of handle push rod
Even.
Wherein：
The insides that positioning card 2 includes linking together by fixing pin 21, nail pin 22 are stained with the upper card 23 of rubber pad I 25 and interior
Side is stained with the lower card 24 of rubber pad II 26；The inside of upper card 23 and lower card 24 is arc-shaped；Nail pin 22 is by upper bail pin 221 under
Bail pin 222 forms；Upper bail pin 221 is connected by fixing pin 21 with lower bail pin 222.
Handle cylinder 3 is made of the top half 31 being docking together by screw thread I and the latter half 32, the top half 31
It is equipped with graduation mark 5.
Extraction probe immobilising device 8 includes body；Body is equipped with push rod rubber neck fixing groove I 81, and end is equipped with
Threaded II 82 the core of the card I 83；The card slot of the matching of the core of the card I 83 socket threaded III 84；Extraction probe 4 sequentially passes through card slot, card
Core I 83；Push rod rubber neck fixing groove I 81 is embedded with rubber neck I 6.
Handle push rod 1 is equipped with push rod graticule I 7.
The application method of the present invention is as follows：
(1) handle push rod 1 is taken out, rubber neck I 6 is embedded in push rod rubber neck fixing groove 81；Gasket 10 is packed into metal
It covers in conduit saddle 9.
(2) the never cated one end of extraction probe 4 is inserted into through metal sleeve 11 through metal sleeve 11, gasket 10
3 the latter half 32 of handle cylinder；Extraction probe 4 is inserted into the core of the card 83 again, insertion depth is adjusted, push rod graticule I 7 is made to be located at graduation mark
When at 50 scale, 4 coating front end of extraction probe does not expose metal sleeve 11 just, tightens card slot, extraction probe 4 is fixed on
On handle push rod 1.
(3) 3 the latter half 32 of handle cylinder by screw thread I with top half 31 is connected, according to actual needs, hand will be extracted
Handle is fixed on suitable metallic support, is stretched into actual sample extraction probe 4 by handle push rod 1, is utilized push rod graticule I
7 and graduation mark 5 observe extraction probe 4 actual exposed length, after respectively the suitable position of handle push rod 1 and handle cylinder 3 pacify
Position card 2 is set, identical coated length and present position are kept in each extraction process for fixed extractor probe 4.Extraction
After finishing, extraction probe 4 is fully retracted in metal sleeve 11 by handle push rod 1, metal sleeve 11 is inserted into gas-chromatography
In vaporizing chamber, extraction probe 4 is released, after the completion for the treatment of target analytes Thermal desorption, then by 4 retraction metal sleeve 11 of extraction probe,
Extraction handle is extracted, completes sample introduction.
Embodiment 2 is as shown in Fig. 2 ~ 5, Fig. 7 ~ 9, solid phase microextraction handle, including handle push rod 1, handle cylinder 3, metallic sheath
Pipe 11 and using stainless steel wire as the extraction probe 4 of backing material.
Handle push rod 1 and handle cylinder 3 are equipped with positioning card 2, which passes through I 6 phase of rubber neck with handle cylinder 3
Even；The lower end of handle cylinder 3 is equipped with the metal sleeve with gasket 10 and fixes support 9, which fixes support 9 and metal sleeve 11
It is connected；Extraction probe 4 sequentially passes through metal sleeve 11, gasket 10 passes through extraction probe immobilising device 8 and 1 phase of handle push rod
Even.
Wherein：
The insides that positioning card 2 includes linking together by fixing pin 21, nail pin 22 are stained with the upper card 23 of rubber pad I 25 and interior
Side is stained with the lower card 24 of rubber pad II 26；The inside of upper card 23 and lower card 24 is arc-shaped；Nail pin 22 is by upper bail pin 221 under
Bail pin 222 forms；Upper bail pin 221 is connected by fixing pin 21 with lower bail pin 222.
Handle cylinder 3 is made of the top half 31 being docking together by screw thread I and the latter half 32, the top half 31
It is equipped with graduation mark 5.
Extraction probe immobilising device 8 includes body；Body is equipped with push rod rubber neck fixing groove II 811, spring retaining groove
821st, the core of the card fixing groove 831, end are equipped with the core of the card II 861；The core of the card II 861 sequentially passes through card cap 851, spring 841 and the core of the card
Fixing groove 831 is connected；Extraction probe 4 passes through the core of the card II 861；Push rod rubber neck fixing groove II 811 is embedded with rubber neck I 6.
Handle push rod 1 is equipped with push rod graticule I 7.
The application method of the present invention is as follows：
(1) extraction push rod 1 is taken out, spring 841, card cap 851 and the core of the card II 861 are mounted on handle push rod 1 successively, firmly will
The core of the card II 861 is embedded in the core of the card fixing groove 831, then handle push rod 1 is packed into 3 top half 31 of handle cylinder, after by rubber neck I
6 are inserted in push rod rubber neck fixing groove II 811, and handle push rod 1 finally is fixed on 3 upper half of handle cylinder by rubber neck I 6
In part 31.
(2) the never cated one end of extraction probe 4 is inserted into through metal sleeve 11 through metal sleeve 11, gasket 10
3 the latter half 32 of handle cylinder；The card cap 851 of extraction probe immobilising device 8 is touched backward, it will after the core of the card II 861 opens completely
The extraction probe 4 of appropriate length is inserted into the core of the card II 861, and push rod graticule I 7 is at 0 scale of graduation mark 5 at this time, and extracts and visit
First 4 coating front end does not expose metal sleeve 11 just, unclamps card cap 851, extraction probe 4 is fixed on handle push rod 1.
(3) 3 the latter half 32 of handle cylinder by screw thread I with top half 31 is connected, according to actual needs, hand will be extracted
Handle is fixed on suitable metallic support, is stretched into actual sample extraction probe 4 by handle push rod 1, is utilized push rod graticule I
7 and graduation mark 5 observe extraction probe 4 actual exposed length, after respectively the suitable position of handle push rod 1 and handle cylinder 3 pacify
Position card 2 is set, identical coated length and present position are kept in each extraction process for fixed extractor probe 4.Extraction
After finishing, extraction probe 4 is fully retracted in metal sleeve 11 by handle push rod 1, metal sleeve 11 is inserted into gas-chromatography
In vaporizing chamber, extraction probe 4 is released, after the completion for the treatment of target analytes Thermal desorption, then by 4 retraction metal sleeve 11 of extraction probe,
Extraction handle is extracted, completes sample introduction.
Embodiment 3 is as shown in Fig. 2 ~ 5, Fig. 7, Figure 10 ~ 11, solid phase microextraction handle, including handle push rod 1, handle cylinder 3,
Metal sleeve 11 and using stainless steel wire as the extraction probe 4 of backing material.
Handle push rod 1 and handle cylinder 3 are equipped with positioning card 2, which is connected with handle cylinder 3；Under handle cylinder 3
End is equipped with the metal sleeve with gasket 10 and fixes support 9, which fixes support 9 and be connected with metal sleeve 11；Extraction probe 4
Sequentially pass through metal sleeve 11, gasket 10 is connected with handle push rod 1.
Wherein：
The insides that positioning card 2 includes linking together by fixing pin 21, nail pin 22 are stained with the upper card 23 of rubber pad I 25 and interior
Side is stained with the lower card 24 of rubber pad II 26；The inside of upper card 23 and lower card 24 is arc-shaped；Nail pin 22 is by upper bail pin 221 under
Bail pin 222 forms；Upper bail pin 221 is connected by fixing pin 21 with lower bail pin 222.
Handle cylinder 3 is made of the top half 31 being docking together by screw thread I and the latter half 32, the top half 31
It is equipped with graduation mark 5.
Handle push rod 1 includes outer push rod 101 and the inner push-rod 102 through outer push rod 101；One end of outer push rod 101 is equipped with
Positioning knob I 111, inner wall are equipped with screw thread IV 112, which is provided with outer push rod scale 113, and the other end is equipped with rubber neck card
Slot 114；Rubber neck card slot 114 is equipped with the rubber neck II with push rod graticule II；One end of inner push-rod 102 is equipped with positioning and revolves
Button II 121, outer wall are equipped with screw thread V 124, are respectively equipped with inner push-rod graticule 123 thereon, and the other end is equipped with the core of the card III 127；
The core of the card III 127 sequentially passes through snap ring retaining groove 126, stainless steel retainer ring 125；Outer push rod 101 is equipped with rubber with 102 joint of inner push-rod
Pad 122；Extraction probe 4 is connected through metal sleeve 11, gasket 10, the core of the card III 127 with handle push rod 1.
The application method of the present invention is as follows：
(1) back out positioning knob I 111 and remove rubber pad 122 in knob；Handle cylinder 3 is unscrewed, handle push rod 1 is taken out, is pushed away interior
Bar 102 is back-outed from outer push rod 101；The never coating at one end of extraction probe 4 is packed into through 11 sealed pad 10 of metal sleeve
3 the latter half 32 of handle cylinder；Extraction probe 4 is inserted into the core of the card III 127, insertion depth is adjusted, is extracting 4 coated ends of extraction probe
Take handle install in the state of just when not exposing metal sleeve 11 push rod graticule II just at " 0 " position of push rod scale
Place, stainless steel retainer ring 125 is pushed among snap ring retaining groove 126 and the core of the card III 127, is pushed away so as to which extraction probe 4 is fixed on handle
On bar 1.
(2) the handle push rod 1 for fixing extraction probe 4 is packed into 3 top half 31 of handle cylinder, by two parts above and below handle
It tightens, is screwed to after rubber pad 122 is embedded in positioning knob I 111 on handle push rod 1.
(3) according to actual needs, determine that the stretching of extraction probe 4 is grown using inner push-rod graticule 123 and outer push rod scale 113
Degree determines the position when extraction probe 4 is fully retracted metal sleeve 11 using push rod graticule II and 3 graduation mark 5 of handle cylinder；It will
Extraction handle is fixed on suitable metallic support, is stretched into extraction probe 4 in actual sample by handle push rod 1, with positioning
Push rod graticule II, after the completion of extraction, is evacuated to the position previously demarcated so that extraction is visited by 2 mark extraction handle cylinder of card, 3 position
First 4 are fully retracted metal sleeve 11, then metal sleeve 11 is inserted into gas-chromatography vaporizing chamber, release extraction probe 4, treat target
After the completion of analyte Thermal desorption, push rod graticule II is evacuated to previously calibration position again, extraction handle is extracted, completes sample introduction.
Claims (9)
1. solid phase microextraction handle, including handle push rod（1）, handle cylinder（3）, metal sleeve（11）With using stainless steel wire as support
The extraction probe of material（4）, it is characterised in that：The handle push rod（1）With the handle cylinder（3）It is equipped with positioning card（2）, should
Handle push rod（1）With handle cylinder（3）It is connected；The handle cylinder（3）Lower end be equipped with band gasket（10）Metal sleeve fix
Support（9）, which, which fixes, holds in the palm（9）With the metal sleeve（11）It is connected；The extraction probe（4）Sequentially pass through the gold
Belong to casing（11）, the gasket（10）With the handle push rod（1）It is connected.
2. solid phase microextraction handle as described in claim 1, it is characterised in that：The positioning card（2）Including passing through fixed pin
Nail（21）, nail pin（22）The inside to link together is stained with rubber pad I（25）Upper card（23）Rubber pad II is stained with inside
（26）Lower card（24）；The upper card（23）With the lower card（24）Inside it is arc-shaped；The nail pin（22）By upper bail
Pin（221）With lower bail pin（222）Composition；The upper bail pin（221）Pass through the fixing pin（21）With the lower bail
Pin（222）It is connected.
3. solid phase microextraction handle as described in claim 1, it is characterised in that：The handle cylinder（3）By being docked by screw thread I
Top half together（31）And the latter half（32）Composition, the top half（31）It is equipped with graduation mark（5）.
4. solid phase microextraction handle as described in claim 1, it is characterised in that：The handle push rod（1）With the handle cylinder
（3）Pass through rubber neck I（6）It is connected.
5. solid phase microextraction handle as described in claim 1, it is characterised in that：The extraction probe（4）It sequentially passes through described
Metal sleeve（11）, the gasket（10）And pass through extraction probe immobilising device（8）With the handle push rod（1）It is connected.
6. solid phase microextraction handle as claimed in claim 5, it is characterised in that：The extraction probe immobilising device（8）Including
Body；The body is equipped with push rod rubber neck fixing groove I（81）, end is equipped with threaded II（82）The core of the card I（83）；
The core of the card I（83）Matching socket threaded III（84）Card slot；The extraction probe（4）Sequentially pass through the card slot, described
The core of the card I（83）；The push rod rubber neck fixing groove I（81）It is embedded with rubber neck I（6）.
7. solid phase microextraction handle as claimed in claim 5, it is characterised in that：The extraction probe immobilising device（8）Including
Body；The body is equipped with push rod rubber neck fixing groove II（811）, spring retaining groove（821）, the core of the card fixing groove（831）,
End is equipped with the core of the card II（861）；The core of the card II（861）Sequentially pass through card cap（851）, spring（841）It is fixed with the core of the card
Slot（831）It is connected；The extraction probe（4）Through the core of the card II（861）；The push rod rubber neck fixing groove II（811）
It is embedded with rubber neck I（6）.
8. solid phase microextraction handle as described in claim 1, it is characterised in that：The handle push rod（1）It is equipped with push rod mark
Line I（7）.
9. solid phase microextraction handle as described in claim 1, it is characterised in that：The handle push rod（1）Including outer push rod
（101）With through the outer push rod（101）Inner push-rod（102）；The outer push rod（101）One end be equipped with positioning knob I
（111）, inner wall is equipped with screw thread IV（112）, which is provided with outer push rod scale（113）, the other end is equipped with rubber neck card slot
（114）；The rubber neck card slot（114）It is equipped with the rubber neck II with push rod graticule II；The inner push-rod（102）One
End is equipped with positioning knob II（121）, outer wall is equipped with screw thread V（124）, inner push-rod graticule is respectively equipped with thereon（123）, it is another
One end is equipped with the core of the card III（127）；The core of the card III（127）Sequentially pass through snap ring retaining groove（126）, stainless steel retainer ring（125）；It is described
Outer push rod（101）With the inner push-rod（102）Joint is equipped with rubber pad（122）；The extraction probe（4）Through the metal
Casing（11）, the gasket（10）, the core of the card III（127）With the handle push rod（1）It is connected.
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| CN108072551B CN108072551B (en) | 2024-03-26 |
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