CN101337178A - Development of novel absorbent in adsorption heat desorption pipe - Google Patents

Development of novel absorbent in adsorption heat desorption pipe Download PDF

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Publication number
CN101337178A
CN101337178A CN 200810060708 CN200810060708A CN101337178A CN 101337178 A CN101337178 A CN 101337178A CN 200810060708 CN200810060708 CN 200810060708 CN 200810060708 A CN200810060708 A CN 200810060708A CN 101337178 A CN101337178 A CN 101337178A
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China
Prior art keywords
thermal desorption
adsorbent
novel
ionic liquid
development
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Pending
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CN 200810060708
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Chinese (zh)
Inventor
陈梅兰
朱岩
费栋
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Zhejiang Shuren University
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Zhejiang Shuren University
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Priority to CN 200810060708 priority Critical patent/CN101337178A/en
Publication of CN101337178A publication Critical patent/CN101337178A/en
Pending legal-status Critical Current

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Abstract

The invention provides a preparation method of a novel adsorbent in a thermal adsorption and desorption tube. The invention provides the preparation method of the novel and high efficient adsorbent in the thermal adsorption and desorption tube, and the preparation method comprises the following steps: an inert glass fiber material is adopted for coating a prepared ionic liquid, and then filled into a conventional thermal adsorption and desorption tube after being aged at a certain temperature, thereby a novel thermal adsorption and desorption tube is made. Through selecting the proper ionic liquid composed of anions and cations, the extraction followed efficiency is higher, and the trace amount of pollutants in the air can be determined through a gas chromatography or the combination of the gas chromatography and a mass spectrum.

Description

The development of new adsorbent in the adsorption heat desorption pipe
Technical field
The present invention relates to the development of a kind of novel, efficient absorption-thermal desorption tube adsorbent, this adsorbent can use the organic dirt at the thermal desorption instrument of routine or thermal desorption coupling gas chromatographic analysis air trace, select the synthetic ionic liquid of suitable yin, yang ion during mensuration earlier, be coated in the glass fiber material of inertia then, refill through uniform temperature aging in the thermal desorption adsorption tube of routine, thereby make a kind of novel absorption-thermal desorption tube.Because ionic liquid has strong extracting and enriching efficient, but the pollutant of trace in the extracting and enriching atmosphere.
Background technology
That gas-chromatography is that present chromatographic field uses is the most extensive, also be present gas and the most effective analysis means of volatile materials.But the organic pollution of some traces in the atmosphere can not carry out conventional sample detection because content is lower, and thermal desorption is exactly to grow up on this basis.The various volatile organic contaminants that are used for traps air at present mainly are some solid adsorption materials (and be to be filled in thermal desorption pipe special enrichment to be measured material as adsorbent): they mainly contain activated carbon, carbon molecular sieve, various porous polymer polymer and porous silicon ball etc., and their characterization of adsorption depends primarily on the specific area of adsorbent, pore-size distribution, polarity, granularity and relative density etc.These adsorbents have the advantage of self, but price is higher, and the user can't be accepted.
So far tasting does not have report, adopts the ionic liquid coating to make the sorbing material filling and advances the mensuration that adsorption tube coupling chromatographic apparatus carries out trace volatile organic contaminant in the environment.
Summary of the invention
The purpose of this invention is to provide a kind of research of hot adsorption/desorption pipe new material newly, this method is to select suitable yin, yang ion to carry out ion liquid synthesizing, be coated on the glass fibre of inertia the aging at a certain temperature organic compound that refills trace in hot adsorption/desorption pipe coupling gas-chromatography or the gaschromatographic mass spectrometric analysis atmosphere then.Because ionic liquid has stronger extracting and enriching efficient,, can be widely used in classes of compounds such as environmental monitoring, workshop air, health and epidemic prevention so can improve sensitivity greatly when measuring.
Still there is not similar functional device both at home and abroad.
The specific embodiment
Embodiment
Adsorption heat desorption coupling gaschromatographic mass spectrometry is measured benzene series thing in the atmosphere
Concrete steps are as follows:
1, ionic liquid 1-octyl group-3-methylimidazole hexafluorophosphate ([[C 8Mim] [PF 6]) synthetic: raw material 1-methylimidazole and 1-chlorine normal octane are by the ratio mixing of 1: 1.2 (amount of substance), then at 80 ℃ of following backflow 24h.After finishing, reaction tells the ionic liquid of lower floor while hot with separatory funnel; With a spot of ethyl acetate washing ionic liquid 3~5 times, then at 75 ℃ of vacuum drying 12h, take out after being cooled to room temperature, obtain product chlorination 1-octyl group-3-methylimidazole ([C 8Mim] Cl).
With [C 8Mim] Cl is dissolved in the low amounts of water, adds the Potassium Hexafluorophosphate solid, stirs 12h at normal temperatures, tells lower floor's ionic liquid after the layering, with the low amounts of water washing, drips the AgNO of 1mol/L in washing ion liquid water 3No white precipitate produces behind the aqueous solution number droplet, shows Cl wherein -By Ex-all.Product obtains end product [C at 70 ℃ of vacuum drying 12h 8Mim] [PF 6].
2, the preparation of adsorption heat desorption pipe: take by weighing a certain amount of clean glass fibre of doing, apply the above-mentioned ionic liquid that has prepared, be placed under the uniform temperature and dry, take out standby.
3, the selection of various parameters: tested various parameters such as air sampler, thermal desorption, can successfully separate and extract the pollutant of trace in the atmosphere at last.
Description of drawings
Fig. 1 is the total ion current figure that filling new adsorbent adsorption heat desorption-combined gas chromatography mass spectrometry is measured benzene series thing in the atmosphere
Be labeled as among Fig. 1:
1-benzene; 2-toluene; 3-ethylbenzene; The 4-paraxylene; The 5-ortho-xylene.

Claims (3)

1. the development of novel, efficient absorption-thermal desorption tube adsorbent, this adsorbent can use the organic dirt at the thermal desorption instrument of routine or thermal desorption coupling gas chromatographic analysis air trace, select the synthetic ionic liquid of suitable yin, yang ion during mensuration earlier, be coated in the glass fiber material of inertia then, refill through uniform temperature aging in the thermal desorption adsorption tube of routine, thereby make a kind of novel absorption-thermal desorption tube.Because ionic liquid has strong extracting and enriching efficient, but the pollutant of trace in the extracting and enriching atmosphere.
2. the development of novel, efficient absorption according to claim 1-thermal desorption tube adsorbent, it is characterized in that this adsorbent adopts ionic liquid to be coated on the glass fibre of inertia, because ion liquid stability, high extraction efficiency improves the detectability of measured object.
This method also can be applied to can by from liquid extraction all kinds of gaseous compounds or analyze or improve sensitivity and improve detectability with similar scheme.
CN 200810060708 2008-04-25 2008-04-25 Development of novel absorbent in adsorption heat desorption pipe Pending CN101337178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200810060708 CN101337178A (en) 2008-04-25 2008-04-25 Development of novel absorbent in adsorption heat desorption pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200810060708 CN101337178A (en) 2008-04-25 2008-04-25 Development of novel absorbent in adsorption heat desorption pipe

Publications (1)

Publication Number Publication Date
CN101337178A true CN101337178A (en) 2009-01-07

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Family Applications (1)

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CN 200810060708 Pending CN101337178A (en) 2008-04-25 2008-04-25 Development of novel absorbent in adsorption heat desorption pipe

Country Status (1)

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CN (1) CN101337178A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103197023A (en) * 2013-04-20 2013-07-10 北京工业大学 Thermal desorption-gas phase-mass spectra combining method for collecting air contaminants based on ionic liquid
CN103923015A (en) * 2013-01-14 2014-07-16 北京工业大学 Two selective ionic liquids and synthesis method thereof
CN105115785A (en) * 2015-08-26 2015-12-02 杭州普洛赛斯检测科技有限公司 Preparation method of sampling tube of dimethylamine and trimethylamine in air and waste gas
CN105784887A (en) * 2016-03-09 2016-07-20 上海烟草集团有限责任公司 Ageing device for thermal desorption pipes and ageing method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103923015A (en) * 2013-01-14 2014-07-16 北京工业大学 Two selective ionic liquids and synthesis method thereof
CN103197023A (en) * 2013-04-20 2013-07-10 北京工业大学 Thermal desorption-gas phase-mass spectra combining method for collecting air contaminants based on ionic liquid
CN105115785A (en) * 2015-08-26 2015-12-02 杭州普洛赛斯检测科技有限公司 Preparation method of sampling tube of dimethylamine and trimethylamine in air and waste gas
CN105115785B (en) * 2015-08-26 2017-10-10 杭州普洛赛斯检测科技有限公司 The preparation method of dimethylamine and trimethylamine sampling pipe in a kind of air and waste gas
CN105784887A (en) * 2016-03-09 2016-07-20 上海烟草集团有限责任公司 Ageing device for thermal desorption pipes and ageing method thereof
CN105784887B (en) * 2016-03-09 2018-09-25 上海烟草集团有限责任公司 The aging equipment and its aging method of thermal desorption pipe

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Open date: 20090107