CN203648138U - Headspace solid-phase micro-extraction device - Google Patents
Headspace solid-phase micro-extraction device Download PDFInfo
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- CN203648138U CN203648138U CN201420001393.3U CN201420001393U CN203648138U CN 203648138 U CN203648138 U CN 203648138U CN 201420001393 U CN201420001393 U CN 201420001393U CN 203648138 U CN203648138 U CN 203648138U
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- water bath
- headspace solid
- temperature
- base
- phase microextraction
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Abstract
The utility model discloses a headspace solid-phase micro-extraction device. The device comprises a base, wherein a magnetic stirring device is arranged on the base; a supporting rod is extended from the base upwards; the headspace solid-phase micro-extraction device also comprises a heating device; the heating device comprises a heater and a double-hole water bath device; the double-hole water bath device is arranged on the magnetic stirring device. Sampling bottles are heated by adopting the water bath device, most of the sampling bottles are not exposed in air, a preset temperature is rapidly reached, and temperature in the sampling bottles is constant. Meanwhile, the water bath is the double-hole water bath device, one hole is used for containing the sampling bottles, the other hole is used for containing a thermometer, and the temperature in the water bath device can be conveniently mastered by an operator at any time. According to the preferred technical scheme, a transverse supporting rod which can move up and down is arranged at the upper end of the supporting rod, and a bracket is arranged on the transverse supporting rod.
Description
Technical field
The utility model relates to a kind of headspace solid-phase microextraction device, especially relates to a kind of headspace solid-phase microextraction device that adopts diplopore water bath heating device.
Background technology
SPME (solid-phase micro-extraction, SPME technology is novel sample pre-treatments and the beneficiation technologies of rising the nineties in 20th century, it developed research by the Pawliszyn professor's of Canadian Waterloo university research group in 1989 at first first, belonged to non-solvent selective extraction method.
SPME is a kind of micro-extraction isolation technics growing up in solid phase extraction techniques, is a kind of centralized procurement sample, and extraction concentrates with sample introduction in the solvent-free sample micro-extraction new technology of one.Compared with solid phase extraction techniques, SPME operation is simpler, carries more conveniently, and operating cost is also cheaper; Overcome in addition that the SPE rate of recovery is low, the susceptible to plugging shortcoming in adsorbent duct.Therefore become one of method being most widely used in currently used Sample Pretreatment Technique.
In headspace extraction pattern, extraction process can be divided into two steps: 1, the first diffusion from liquid phase of analyzed component is penetrated in gas phase; 2, analyzed component from gas phase transfer to extraction fixing mutually.This remodeling can be avoided the fixing pollution that is subject to mutually the middle polymer substance of some sample substrate (such as human secretion or urine) and involatile substance of extraction.In this extraction process, the rate of extraction of step 2 is far longer than the diffusion velocity of step 1 generally, so step 1 becomes the control step of extraction.Therefore volatile component has faster rate of extraction than half volatile component.In fact for volatile component, under identical sample blending condition, the equilibration time of headspace extraction is far smaller than the direct extraction equilibrium time.
Existing headspace solid-phase microextraction device comprises base, is placed with magnetic stirring apparatus on base, has heater and communicate the temperature in sample bottle by adding thermal conduction plate on magnetic stirring apparatus, wherein in another sample bottle, is placed with thermometer.
But, adopt the technical scheme in above-mentioned patent documentation, the method of sample injection bottle heating is to communicate the temperature in sample injection bottle by adding thermal conduction plate, so often need for a long time just can reach predetermined temperature, and cannot guarantee the temperature constant in sample bottle, because a large amount of bottles is exposed in air, especially in the situation that around environment temperature is lower, in for example winter, it is too of a specified duration that sample injection bottle reaches predetermined temperature, affects conventional efficient; The temperature of sample bottle is to obtain by the thermometer in adjacent bottle, and obviously, the temperature of these two cannot guarantee identical, because the two is not in same system, owing to adding, the thermal conduction plate uneven and adjacent bottle surrounding air circulation of being heated is different; If the impact of research temperature on effect of extracting, can consume a large amount of time, for example study multiple temperature values, or study multifactor multilevel and while adopting orthogonal design to obtain optimum experimental condition (as studied the experiment condition of 7 factor 4 levels, according to L
32(4
9) need to carry out 32 times experiment), but because heating effect is poor and be difficult to regulating and controlling temperature easily, can cause that the plenty of time consumes in the temperature adjustment step of sample bottle.
Therefore, be necessary the heater of existing headspace solid-phase microextraction device to improve.
Utility model content
The technical problem that the utility model solves is, provides a kind of heating effect good, and it is convenient to regulate, and reduces the headspace solid-phase microextraction device of temperature on effect of extracting impact.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: this headspace solid-phase microextraction device, this device comprises base, on described base, be provided with magnetic stirring apparatus, upwards extend and there is support bar from base, also include heater, described heater comprises heater (401) and diplopore water bath device, and described diplopore water bath device is arranged on described magnetic stirring apparatus.
Owing to adopting water bath device to heat sampling bottle, the major part of sampling bottle can not be exposed in air, reaches predetermined temperature fast, the temperature constant in sample bottle; Water bath device is diplopore water bath device simultaneously, and one of them places sampling bottle, and another is laying temperature meter, and handled easily personnel control the temperature in water bath device constantly.
Further improve and be, the upper end of described support bar has lateral strut moving up and down, in described lateral strut, has bracket.
Lateral strut is moving up and down, and convenient operation personnel regulate the height of lateral strut, bracket is set in addition and is convenient to install sampling handle and extracting head.
Further improve and be, described bracket has upper part and lower part, and the internal diameter of described upper part is larger than the internal diameter of lower part, and the edge of upper part axially protrudes and extends to form the fixed part being connected with lateral strut.
The internal diameter of the upper part of bracket is larger than the internal diameter of lower part, and convenient operation personnel insert sampling handle and extracting head in bracket from top to bottom like this, and lower part internal diameter is little, and sampling handle can not drop out from bracket; The edge of upper part axially protrudes and extends to form the fixed part being connected with lateral strut, the beneficial effect of its generation is the fixed installation of being convenient to bracket and lateral strut, simultaneously oriented manipulation personnel part is not axially protruded, and is conducive to operating personnel and observes the state of sampling handle.
Further improve and be, the upper cover surrounding of described diplopore water bath device has the rib limit projecting upwards, and the beneficial effect of its generation is that the article in operating table surface can not break away to upper cover, handled easily personnel.
Further improve and be, in described diplopore water bath device, be wherein arranged on centre position for the hole of placing sampling bottle.
The overall beneficial effect of the utility model is: it is fast that sampling bottle reaches predetermined temperature, and guarantees the temperature constant in sample bottle, and conventional efficient is high; The temperature of sample bottle is consistent with thermometer show value, and temperature is little on the impact of effect of extracting, and heating effect is good, and regulating and controlling temperature is convenient.
Accompanying drawing explanation
Further describe below in conjunction with accompanying drawing and embodiment of the present utility model:
Fig. 1 is the structural representation of headspace solid-phase microextraction device in prior art;
Fig. 2 is the structural representation of the utility model headspace solid-phase microextraction device;
Wherein: 1-base, 2-magnetic stirring apparatus, 3-support bar, 301-upper end, 302-lateral strut, 303-bracket, the upper part of 3031-, part under 3032-, 3033-fixed part, 4-heater, 401-heater, 402-diplopore water bath device, 4021-rib limit, 4022,4024-hole, 4023-upper cover.
The specific embodiment
In order further to understand the improvement that the utility model is made prior art, first prior art is illustrated as follows: as shown in Figure 1, this headspace solid-phase microextraction device comprises base 101, on base 101, be placed with magnetic stirring apparatus 102, on magnetic stirring apparatus 102, there is heater 103 and communicate the temperature in sample bottle 100 by adding thermal conduction plate 1031, wherein in another sample bottle 100-1, being placed with thermometer.
Adopt above-mentioned existing technical scheme, the method of sample injection bottle heating is to communicate the temperature in sample injection bottle by adding thermal conduction plate, so often need for a long time just can reach predetermined temperature, and cannot guarantee the temperature constant in sample bottle, because a large amount of bottles is exposed in air, in the situation that environment temperature is lower especially around, for example winter, it is too of a specified duration that sample injection bottle reaches predetermined temperature, affects conventional efficient; The temperature of sample bottle is to obtain by the thermometer in adjacent bottle, and obviously, the temperature of these two cannot guarantee identical, because the two is not in same system, owing to adding, the thermal conduction plate uneven and adjacent bottle surrounding air circulation of being heated is different; If the impact of research temperature on effect of extracting, can consume a large amount of time, for example study multiple temperature values, or study multifactor multilevel and while adopting orthogonal design to obtain optimum experimental condition (as studied the experiment condition of 7 factor 4 levels, according to L
32(4
9) need to carry out 32 times experiment), but because heating effect is poor and be difficult to regulating and controlling temperature easily, can cause that the plenty of time consumes in the temperature adjustment step of sample bottle.
Implement novel content for understanding more easily this, the left and right that the following stated relates to, is consistent with the orientation in accompanying drawing up and down.
As shown in Figure 1, headspace solid-phase microextraction device comprises base 1, on base 1, be provided with magnetic stirring apparatus 2, upwards extend and there is support bar 3 from base 1, also include heater 4, heater 4 comprises heater 401 and diplopore water bath device 402, diplopore water bath device 402 is arranged on described magnetic stirring apparatus 2, the upper end 301 of support bar 3 has lateral strut 302 moving up and down, in lateral strut 302, there is bracket 303, upper cover 4023 surroundings of diplopore water bath device 402 have the rib limit 4021 projecting upwards, in diplopore water bath device 402, be wherein arranged on centre position for the hole 4022 of placing sampling bottle, hole 4024 is for laying temperature meter.
Bracket 303 has upper part 3031 and lower part 3032, and the internal diameter of upper part 3031 is larger than the internal diameter of lower part 3032, and the edge of upper part 3032 axially protrudes and extends to form the fixed part 3033 being connected with lateral strut 302.
More than show and described basic principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a headspace solid-phase microextraction device, this device comprises base (1), on described base (1), be provided with magnetic stirring apparatus (2), upwards extend and there is support bar (3) from base (1), also include heater (4), it is characterized in that, described heater (4) comprises heater (401) and diplopore water bath device (402), and described diplopore water bath device (402) is arranged on described magnetic stirring apparatus (2).
2. headspace solid-phase microextraction device according to claim 1, is characterized in that, the upper end (301) of described support bar (3) has lateral strut moving up and down (302), has bracket (303) in described lateral strut (302).
3. headspace solid-phase microextraction device according to claim 2, it is characterized in that, described bracket (303) has upper part (3031) and lower part (3032), the internal diameter of described upper part (3031) is larger than the internal diameter of lower part (3032), and the edge of upper part (3032) axially protrudes and extends to form the fixed part (3033) being connected with lateral strut (302).
4. according to the headspace solid-phase microextraction device described in claim 1-3 any one, it is characterized in that, upper cover (4023) surrounding of described diplopore water bath device (402) has the rib limit (4021) projecting upwards.
5. headspace solid-phase microextraction device according to claim 4, is characterized in that, in described diplopore water bath device (402), is wherein arranged on centre position for the hole (4022) of placing sampling bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001393.3U CN203648138U (en) | 2014-01-02 | 2014-01-02 | Headspace solid-phase micro-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420001393.3U CN203648138U (en) | 2014-01-02 | 2014-01-02 | Headspace solid-phase micro-extraction device |
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| Publication Number | Publication Date |
|---|---|
| CN203648138U true CN203648138U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420001393.3U Expired - Fee Related CN203648138U (en) | 2014-01-02 | 2014-01-02 | Headspace solid-phase micro-extraction device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389837A (en) * | 2017-07-20 | 2017-11-24 | 山东钢铁集团日照有限公司 | A kind of device of air extraction volatile organic matter |
| CN108593822A (en) * | 2018-07-12 | 2018-09-28 | 南京林业大学 | Solid phase microextraction sampling device and its system |
| CN112316489A (en) * | 2019-08-05 | 2021-02-05 | 中国科学院微生物研究所 | Solid phase microextraction dual temperature control device and method |
-
2014
- 2014-01-02 CN CN201420001393.3U patent/CN203648138U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389837A (en) * | 2017-07-20 | 2017-11-24 | 山东钢铁集团日照有限公司 | A kind of device of air extraction volatile organic matter |
| CN108593822A (en) * | 2018-07-12 | 2018-09-28 | 南京林业大学 | Solid phase microextraction sampling device and its system |
| CN112316489A (en) * | 2019-08-05 | 2021-02-05 | 中国科学院微生物研究所 | Solid phase microextraction dual temperature control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20150102 |
|
| EXPY | Termination of patent right or utility model |