CN202255986U - Gaseous volatile matter sampling enricher in high vacuum environment - Google Patents
Gaseous volatile matter sampling enricher in high vacuum environment Download PDFInfo
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- CN202255986U CN202255986U CN2011202910268U CN201120291026U CN202255986U CN 202255986 U CN202255986 U CN 202255986U CN 2011202910268 U CN2011202910268 U CN 2011202910268U CN 201120291026 U CN201120291026 U CN 201120291026U CN 202255986 U CN202255986 U CN 202255986U
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Abstract
The utility model discloses a gaseous volatile matter sampling enricher in high vacuum environment, wherein the enricher comprises a silk screen packaging material and an electro-spinning nanometer fiber felt packaged inside the silk screen packaging material; and the electro-spinning nanometer fiber felt is obtained by stirring a high molecular polymer as a raw material in a solvent to dissolve to obtain a mixed solution, and then spinning the mixed solution into the electro-spinning nanometer fiber felt by a static spinning technique. The enricher is capable of sampling and enriching the volatile matter in a high vacuum system, applicable to different environments and capable of selectively capturing targets.
Description
Technical field
The invention belongs to gaseous volatilization material acquisition technique field, be specifically related to a kind of based on gaseous state volatile matter sampling enricher in the high vacuum environment of nanofiber.
Background technology
The acquisition method of gaseous state volatile matter divides direct analysis, active sampling method, passive sampling method.Utilize direct analysis can obtain current online information, but this method ordinary disbursements is expensive; Initiatively sampling method must be used air pump, and this is difficult to realize in high vacuum environment; What passiveness sampling method adopted is to fill the air mechanism, and just molecular contaminants utilizes nature to spread on the sampling thief that permeates.This method integrates susceptibility, the simple and practical and more reasonable multiple advantage of equipment price preferably.
Gaseous sample collection at present can be sampled with evacuated Soviet Union agate jar usually; Soviet Union's agate jar is the metal can of inwall through polishing;, the laboratory measures after capturing volatile organic matter with pre-concentration appearance cryoconcentration then; This method is obviously loaded down with trivial details, also is difficult to effectively use at high vacuum environment.
Passiveness sampling method can adopt the solid phase adsorption method; The adsorbent that comprises charcoal absorption, porous polymer bead (XAD-2 resin, TENAX resin etc.) and various materials; Various adsorbents have the limitation of self, are applied to monitor that gaseous state volatile matter aspect can't meet the demands fully in the high vacuum environment.The present invention therefore.
Summary of the invention
The object of the invention is to provide in a kind of high vacuum environment gaseous state volatile matter sampling enricher, has solved problem such as can not meet the demands fully when gas sampling enrichment device of the prior art is applied to monitor in the high vacuum environment gaseous state volatile matter.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
Gaseous state volatile matter sampling enricher in a kind of high vacuum environment; It is characterized in that said enricher comprises silk screen wrappage and the electro spinning nano fiber felt that is packaged in the silk screen wrappage; Said electro spinning nano fiber felt is to be raw material with the high molecular polymer; Stirring and dissolving is processed mixed solution under solvent condition, utilizes electrostatic spinning technique that the mixed solution spinning is formed described electro spinning nano fiber felt.
Preferably, said high molecular polymer is selected from one or more any mixing of polystyrene, styrene-methacrylic acid copolymer, polyacrylonitrile, acryl resin.
Preferably, said solvent is selected from N, the mixed solvent of one or more of dinethylformamide, tetrahydrofuran, ethanol, acetate.
Preferably, the diameter of the nanofiber that contains of said electro spinning nano fiber felt is in the 10-1000nm scope.
The present invention proposes with functional nano-fiber as sorbing material; Use high molecular polymer to be raw material with this material; One or more add an amount of suitable solvent (like N with polymkeric substance (like polystyrene, styrene-methacrylic acid copolymer, polyacrylonitrile, acryl resin or the like high molecular polymer); Dinethylformamide, tetrahydrofuran, ethanol, acetate etc.) stirring and dissolving processes mixed solution, utilizes electrostatic spinning technique that solution is spun into nanofiber.Process the enricher of the difformity specification that is fit to the specific environment use with nanofiber.Can be used for the efficient sampling of gaseous state volatile matter in the high vacuum system, this technology collection object collection, concentrate in one, easy to operation, better solve in the high vacuum system gaseous state volatile matter and gathered a difficult problem.
Principle of work of the present invention is with enricher gaseous state volatile matter collection in worksite in the high vacuum system.Before the system works, enricher with metal wire suspension or be put on the suitable support and put into system, or is overlying on vacuum system exhaust tube road junction, vacuumizes along with system in the process of operation, the volatile matter that system produces will be adsorbed on the nanofiber.When waiting to need to detect, enricher is analysed with little solvent parsing or head space pyrolysis, desorbed solution (gas) can inject suitable detecting instrument and detect.
With respect to scheme of the prior art, advantage of the present invention is:
The present invention relates to a kind of gaseous state volatile matter sampling enrichment method based on functional nano-fiber; Particularly relate to a kind of sampling of gaseous state volatile substance, enrichment, desorption of can be used for high vacuum environment, thereby be beneficial to the pre-treating method and the employed device of monitoring based on functional nano-fiber.This enricher can be to volatile matter sampling, enrichment in the high vacuum system, and analyzing its desorbed solution (gas) can, quantitative test qualitative to volatile matter.The enricher of making can change the shape of netted housing material (various textile silk screens or wire gauze) and whole enricher, is fit to varying environment and uses.Its inner nanofiber also can be adjusted the raw material of spinning according to intending the gaseous material that captures, and is prepared into the nanofiber (diameter 10-1000nm) of corresponding organic or inorganic, to reach the purpose that selectivity captures object.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the structural representation of gaseous state volatile matter sampling enricher in the high vacuum environment;
Fig. 2 is the micromechanism synoptic diagram of the electro spinning nano fiber felt of gaseous state volatile matter sampling enricher in the high vacuum environment;
Fig. 3 is that nanofiber enricher eluent capillary gas chromatography detects figure.
Wherein: 1 is the electro spinning nano fiber felt; 2 is the silk screen wrappage.
Embodiment
Below in conjunction with specific embodiment such scheme is further specified.Should be understood that these embodiment are used to the present invention is described and are not limited to limit scope of the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment
As depicted in figs. 1 and 2, gaseous state volatile matter sampling enricher comprises silk screen wrappage 2 and the electro spinning nano fiber felt 1 that is packaged in the silk screen wrappage in this high vacuum environment.
Said electro spinning nano fiber felt prepares through following method: one or more the high molecular polymer of any mixing to be selected from polystyrene, styrene-methacrylic acid copolymer, polyacrylonitrile, acryl resin is a raw material; Stirring and dissolving is processed mixed solution under solvent condition, utilizes electrostatic spinning technique that the mixed solution spinning is formed described electro spinning nano fiber felt.
Said solvent is selected from N, the mixed solvent of one or more of dinethylformamide, tetrahydrofuran, ethanol, acetate.The diameter of the nanofiber that said electro spinning nano fiber felt contains is in the 10-1000nm scope.
The collection that this enricher is applied to molecular pump oil gas atmosphere in the high vacuum environment can be following with mensuration:
In an airtight environment, put into small number of molecules pump oil, there is the enricher of 5mg pipe/polyhenylethylene nano fiber to insert in this system packing, total system is evacuated down to 10
-3Pa behind the certain hour, takes out enricher, places the small test tube that contains 1ml methyl alcohol, vibrates several minutes, draws the methanol solution inject gas chromatograph and detects.The result sees Fig. 3.In the high vacuum system, each component of molecular pump oil volatilization is trapped by nanofiber, and this sample is the potpourri of component more than.If connect detecting devices such as mass spectrum, can carry out discriminatory analysis to each component, and chromatographic peak area also with confined space in volatile matter corresponding relation is arranged.
Above-mentioned instance only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (2)
1. gaseous state volatile matter sampling enricher in the high vacuum environment is characterized in that said enricher comprises silk screen wrappage and the electro spinning nano fiber felt that is packaged in the silk screen wrappage.
2. gaseous state volatile matter sampling enricher in the high vacuum environment according to claim 1, the diameter that it is characterized in that the nanofiber that said electro spinning nano fiber felt contains is in the 10-1000nm scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202910268U CN202255986U (en) | 2011-08-11 | 2011-08-11 | Gaseous volatile matter sampling enricher in high vacuum environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202910268U CN202255986U (en) | 2011-08-11 | 2011-08-11 | Gaseous volatile matter sampling enricher in high vacuum environment |
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| CN202255986U true CN202255986U (en) | 2012-05-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419273A (en) * | 2011-08-11 | 2012-04-18 | 东南大学 | Device for sampling and enriching gaseous volatile matters in high vacuum environment |
| CN104792603A (en) * | 2015-04-15 | 2015-07-22 | 东南大学 | Nano-fiber-assisted headspace solid-phase microextraction method |
| CN104977185A (en) * | 2015-07-03 | 2015-10-14 | 农业部亚热带果品蔬菜质量监督检验测试中心 | Farmland irrigation water sampling method |
-
2011
- 2011-08-11 CN CN2011202910268U patent/CN202255986U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419273A (en) * | 2011-08-11 | 2012-04-18 | 东南大学 | Device for sampling and enriching gaseous volatile matters in high vacuum environment |
| CN104792603A (en) * | 2015-04-15 | 2015-07-22 | 东南大学 | Nano-fiber-assisted headspace solid-phase microextraction method |
| CN104792603B (en) * | 2015-04-15 | 2019-02-05 | 东南大学 | The Headspace solid phase microextractiom of nanofiber auxiliary |
| CN104977185A (en) * | 2015-07-03 | 2015-10-14 | 农业部亚热带果品蔬菜质量监督检验测试中心 | Farmland irrigation water sampling method |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130811 |