CN2700880Y - Solid-phase micro extraction apparatus - Google Patents
Solid-phase micro extraction apparatus Download PDFInfo
- Publication number
- CN2700880Y CN2700880Y CN 200420023590 CN200420023590U CN2700880Y CN 2700880 Y CN2700880 Y CN 2700880Y CN 200420023590 CN200420023590 CN 200420023590 CN 200420023590 U CN200420023590 U CN 200420023590U CN 2700880 Y CN2700880 Y CN 2700880Y
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- probe
- rod
- spring
- adjuster bar
- tube
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Abstract
The utility model discloses a solid-phase micro extraction apparatus, comprising a probe rod, a regulating stem which is provided with a guiding groove, a fixing nut and a probe part. The probe rod and the probe part are used the center of the regulating stem as an axial center, and a probe seat at the bottom of the probe rod is connected with a probe needle tube. The external diameter of a small cylinder below the probe seat is sheathed in the inner diameter of a spring, so the spring is fixed and is incapable of moving right and left. The other end of the spring is connected with a tube protection sleeve, and the lower part of the tube protaction sleeve is connected with a probe sheath tube. The probe sheath tube is penetrated out of the fixing nut which is tightly sheathed on the outside of the lower part of the regulating stem and is connected with the screw thread of the regulating stem, and the head of the probe tube is a probe fibre head. The utility model uses a fixing screw in the guiding groove of the regulating stem to fix the position of the probe rod and adjust and control the protruding length of the probe. In this way, the probe fibre head is effectively protected. In addition, polyhedral fixing nut is designed to replace a holding rod and a holding rod end in prior art. So the product structure is simplified, the operation is more convenient, and the operating stability of the apparatus is increased.
Description
Technical field
The utility model relates to a kind of solid-phase micro-extracting device, is used for instrumental analysis biological and general volatilizable and the organic sample that partly volatilizees, belongs to instrumental analysis and sample pretreatment field.
Background technology
Chromatographic technique is one of main means of Analysis of environmental samples.Because environmental sample complexity, changeable and concentration is lower, so just can carry out various instrumental analysis after pre-treatment must be passed through.That traditional pre-treating method generally has is with an organic solvent more, the processing time is long and the many shortcomings of operation steps, and in The whole analytical process the sample pretreatment larger proportion (greater than 2/3) that accounts for consuming time.So research accuracy height, simple and sample-pretreating method solvent free is a focus in field, contemporary analytical chemistry forward position fast.Since nineteen nineties, various novel sample-pretreating methods successively emerge, as methods such as supercritical fluid extraction, Solid-Phase Extraction, Subcritical Water Extraction, EXTRACTION BY SUPPORTED LIQUID MEMBRANES, solid-phase microextraction.Wherein the little collection of solid phase (SPME) technology is used morely, and its advantage is: 1, fiber head has good extraction or adsorbability 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 the inconvenience of the steps such as sampling, enrichment, preservation and elimination interference in traditional sample pretreatment process.Because of not needing organic solvent, so be the sample pre-treatments technology of " green ".
Now commercially available solid phase micro-extraction device is a typical products with the production of U.S. Supelo company, mainly is made up of two parts, and first is made of probe, spring, probe base and probe rod; Second portion is a holding rod, is made of several parts such as holding rod end cap, adjusting screw, adjuster bars.The principle of operation of this instrument is: probe is for being coated with stain various resistant to elevated temperatures chemical substances (also can apply active carbon layer) at quartz fibre or wire surface, utilize chemical substance to have extractibility or activated charcoal to have adsorbability fiber is inserted or to be exposed in the sample to pollutant, contact generation extraction (absorption) with test substance, after finishing extraction (absorption), regain probe, insert instrument injection port pyrolysis such as gas chromatography again and analyse, it is fixed that test substance is discharged the pacing of going forward side by side.Probe is controlled by probe rod, is protected in the stainless steel outer sleeve when not using.Adjuster bar is connected probe rod with adjusting screw with holding rod, make probe stretch out or withdraw from the holding rod end cap.Holding rod and holding rod end cap in this class solid-phase micro-extracting device are right cylinder, tumble from worktable easily in use, cause the fiber head damage.The easy move left and right of contained spring; During assembling, fixed screw stripped thread, phenomenon of can not revolving in holding rod appear sometimes.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of improved solid-phase micro-extracting device is provided, and it is more simple to make it structure, operates more convenient reliable.
For realizing such purpose, the technical solution of the utility model is: solid-phase micro-extracting device mainly comprises probe rod, adjuster bar, hold-doun nut and probe portion.Probe rod and probe portion are the axle center with the center of adjuster bar all, the probe base of probe rod bottom links to each other with the probe needle tubing, probe base is made of two right cylinders that vary in size, wherein the external diameter of the lower end small cylinder of linking probe needle tubing is inserted in the internal diameter of spring, and spring is fixed and can move left and right.The other end of spring links to each other with protective pipe sleeve, spring and protective pipe sleeve junction between the two seals with sealing shroud, protective pipe sleeve bottom linking probe protecting pipe, the urgent hold-doun nut center that is enclosed within the outside, adjuster bar bottom and is threaded with adjuster bar of probe sheath pipe passes, and probe needle tubing head is the probe fiber head.On adjuster bar, have some different interval to guide groove, utilize fixed screw in guide groove to fix the position of probe rod, regulate the length that the control probe stretches out.The utility model is designed to polyhedron with the outside surface of hold-doun nut, solid-phase micro-extracting device is placed on the worktable does not stablely roll, and the probe fiber head can not damaged.Hold-doun nut can directly be gripped and be operated, and the lower surface of hold-doun nut is the plane, and when the injection port pyrolysis of probe portion being inserted gas chromatography was analysed, this plane directly was in the injection port top, plays stable effect.
When device uses, the probe fiber head is exposed in the pollutant samples earlier, regulate the probe rod position, the probe fiber head is regained in the probe sheath pipe.After the probe sheath tube portion being inserted the injection port of gas chromatography, again the probe fiber head is leant out and be exposed in the injection port pyrolysis and analyse, again the probe fiber head is regained in the probe sheath pipe and from injection port after desorb finishes and extracted.So just, finished the single injected sampling process.
The utility model has directly replaced hold-doun nut the holding rod and the holding rod end of prior art, has simplified product structure, has both saved manufacturing materials, reduces technology again, uses operation more convenient.The lower surface of hold-doun nut is the plane; increase the device probe portion and inserted the stability of the injection port pyrolysis of gas chromatography duty when analysing; and the hold-doun nut outside surface is a polyhedron; can roll in the plane by anti-locking apparatus; increased device and be placed on stability on the worktable, the probe fiber head played a protective role.Utilize the external diameter of probe base small cylinder to be inserted in the internal diameter of spring, spring is fixed and can move left and right, guarantee the stability of probe work.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model solid-phase micro-extracting device.
Among Fig. 1,1 is probe rod, and 2 is adjuster bar, and 3 is fixed screw, and 4 is to guide groove, and 5 is probe base, and 6 is spring, and 7 is sealing shroud, and 8 is protective pipe sleeve, and 9 is hold-doun nut, and 10 is the probe sheath pipe, and 11 is the probe needle tubing, and 12 is the probe fiber head.
Fig. 2 is the utility model contour structures synoptic diagram.
Among Fig. 2,1 is probe rod, and 2 is adjuster bar, and 3 is fixed screw, and 4 is to guide groove, and 9 is hold-doun nut, and 10 is the probe sheath pipe, and 11 is the probe needle tubing, and 12 is the probe fiber head.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further described.
The one-piece construction of the utility model solid-phase micro-extracting device comprises probe rod 1, adjuster bar 2, fixed screw 3 as shown in Figure 1, to guide groove 4, and probe base 5, spring 6, sealing shroud 7, protective pipe sleeve 8, hold-doun nut 9, probe sheath pipe 10, probe needle tubing 11, probe fiber head 12.Probe rod 1 and probe portion are the axle center with the center of adjuster bar 2 all, the probe base 5 of probe rod 1 bottom links to each other with probe needle tubing 11, probe base 5 is made of two right cylinders that vary in size, wherein the external diameter of lower end small cylinder is inserted in the internal diameter of spring 6, spring is fixed and can move left and right, the other end of spring 6 links to each other with protective pipe sleeve 8, junction between spring 6 and the protective pipe sleeve 8 seals with sealing shroud 7, protective pipe sleeve 8 bottom linking probe protecting pipes 10, the center of the probe sheath pipe 10 urgent hold-doun nuts 9 that are enclosed within the outside, adjuster bar bottom and are threaded with adjuster bar passes, and probe needle tubing 11 heads are probe fiber head 12.On adjuster bar 2, have some different interval to guide groove 4, utilize fixed screw 3 in guide groove 4 to fix the position of probe rod 1, regulate the length that the control probe stretches out.
The utility model contour structures as shown in Figure 2.Probe rod 1 is installed in the adjuster bar 2, the outside, the bottom of adjuster bar 2 tight cover hold-doun nut 9, and probe needle tubing 11 passes together with the center of its probe sheath pipe 10 from hold-doun nut 9, and the head of probe needle tubing 11 is a probe fiber head 12.The outside surface of hold-doun nut 9 is polyhedron, for the prism of two opposite planar is arranged, solid-phase micro-extracting device is placed on the worktable does not stablely roll, and the probe fiber head can not damaged.Hold-doun nut 9 can directly be gripped and be operated, and the lower surface of hold-doun nut 9 is the plane, and when the injection port pyrolysis of probe portion being inserted gas chromatography was analysed, this plane directly was in the injection port top, plays stable effect.On adjuster bar 2, have some different interval to guide groove 4, can utilize fixed screw 3 in guide groove 4 to fix the position of probe rod 1 like this, regulate the length that the control probe stretches out
When device uses, probe fiber head 12 was exposed in the pollutant sampling after 5-20 minute, utilizes and differently on the adjuster bar 2 regulate the position of probe rods 1, fiber head 12 is regained in the probe sheath pipes 10 to guide groove 4.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 left and right sides desorb in 30 seconds finishes, extract from injection port again.So just, finished the single injected sampling process.
Claims (1)
1, a kind of solid-phase micro-extracting device, comprise probe rod (1), adjuster bar (2) and probe portion, it is characterized in that probe rod (1) and probe portion are the axle center with the center of adjuster bar (2) all, the probe base (5) of probe rod (1) bottom links to each other with probe needle tubing (11), probe base (5) is made of two right cylinders that vary in size, wherein the external diameter of lower end small cylinder is inserted in the internal diameter of spring (6), spring is fixed and can move left and right, the other end of spring (6) links to each other with protective pipe sleeve (8), junction between spring (6) and the protective pipe sleeve (8) seals with sealing shroud (7), protective pipe sleeve (8) bottom linking probe protecting pipe (10), urgent hold-doun nut (9) center that is enclosed within the outside, adjuster bar bottom and is threaded with adjuster bar of probe sheath pipe (10) passes, probe needle tubing (11) head is probe fiber head (12), on adjuster bar, have different interval to guide groove (4), the fixed screw (3) of utilization in guide groove (4) fixes the position of probe rod (1) and regulates the length that the control probe stretches out, and the outside surface of hold-doun nut (9) is polyhedron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420023590 CN2700880Y (en) | 2004-06-09 | 2004-06-09 | Solid-phase micro extraction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420023590 CN2700880Y (en) | 2004-06-09 | 2004-06-09 | Solid-phase micro extraction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700880Y true CN2700880Y (en) | 2005-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420023590 Expired - Fee Related CN2700880Y (en) | 2004-06-09 | 2004-06-09 | Solid-phase micro extraction apparatus |
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| Country | Link |
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| CN (1) | CN2700880Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299793C (en) * | 2005-07-21 | 2007-02-14 | 上海交通大学 | Cyclic condensation solid-phase extraction apparatus |
| CN101912769A (en) * | 2010-07-09 | 2010-12-15 | 中山大学 | Extraction head detachable type solid phase micro extraction probe and preparation method thereof |
| CN101637668B (en) * | 2009-01-14 | 2011-07-20 | 中山大学 | Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof |
| US20140033835A1 (en) * | 2012-07-31 | 2014-02-06 | Jan Hendrikse | Solid phase micro extraction (spme) vacuum inlet |
| US9649153B2 (en) | 2009-10-27 | 2017-05-16 | Holaira, Inc. | Delivery devices with coolable energy emitting assemblies |
-
2004
- 2004-06-09 CN CN 200420023590 patent/CN2700880Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299793C (en) * | 2005-07-21 | 2007-02-14 | 上海交通大学 | Cyclic condensation solid-phase extraction apparatus |
| CN101637668B (en) * | 2009-01-14 | 2011-07-20 | 中山大学 | Device and method for combined use of molecular imprinting solid phase microextraction and hollow fiber liquid phase microextraction, and application thereof |
| US9649153B2 (en) | 2009-10-27 | 2017-05-16 | Holaira, Inc. | Delivery devices with coolable energy emitting assemblies |
| US9675412B2 (en) | 2009-10-27 | 2017-06-13 | Holaira, Inc. | Delivery devices with coolable energy emitting assemblies |
| CN101912769A (en) * | 2010-07-09 | 2010-12-15 | 中山大学 | Extraction head detachable type solid phase micro extraction probe and preparation method thereof |
| CN101912769B (en) * | 2010-07-09 | 2013-02-27 | 中山大学 | Extraction head detachable type solid phase micro extraction probe and preparation method thereof |
| US20140033835A1 (en) * | 2012-07-31 | 2014-02-06 | Jan Hendrikse | Solid phase micro extraction (spme) vacuum inlet |
| US9134208B2 (en) * | 2012-07-31 | 2015-09-15 | Smiths Detection Montreal Inc. | Solid phase micro extraction (SPME) vacuum inlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |