Perfluoro-capillary extraction monolithic column and preparation method and application thereof

A monolithic column and capillary technology, which is applied in the field of preparation of perfluorocapillary extraction monolithic columns, can solve the problems that the packed extraction column cannot realize remote enrichment sampling, large mass transfer resistance, and low extraction efficiency, and achieves a simple and fast preparation method Reliable, adsorption-specific avoidance, shortened analysis time effects
CN102183603AInactive Publication Date: 2011-09-14HUNAN NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN NORMAL UNIVERSITY
Publication Date
2011-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a perfluoro-capillary extraction monolithic column and a preparation method and application thereof. The perfluoro-capillary extraction monolithic column is a monolithic column in which silica gel matrix is polymerized in situ in a quartz capillary tube with diameter of 75 to 530 microns and perfluoro functional groups are bonded on the surface of the silica gel matrix. The perfluoro functional groups comprise perfluoro-octyl (C6F13), perfluoro-decyl (C8F17), N-perfluorooctanoic sulfonyl and derivatives thereof. The monolithic column can be used for enriching a series of trace perfluoro-chemicals, such as perfluorooctane sulfonate (PFOS), perfluorooctane carboxylate (PFOA), perfluorodecanoate (PFDA), perfluorohexyl sulfonate (PFHXS) and the like. The preparation method of the monolithic column is simple, fast and reliable, the average adsorption quantity can reach over 6.0*10<-2>mug, and the average enrichment times is 30 times; the average recovery rate is over 90 percent, the sensitivity of analysis and detection is greatly improved, and interference of impurities is avoided; and the monolithic column is convenient and fast to carry, a trace perfluoro-chemical sample can be directly enriched at a remote acquisition point, the transport cost is reduced, and the analysis time is shortened.
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Description

technical field

[0001] The invention relates to the field of analytical chemical sample collection and sample pretreatment, in particular to a preparation method and application of a perfluorinated capillary extraction monolithic column. Background technique

[0002] Perfluorinated compounds (PFCs) mainly include perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorodecanoic acid (PFDA), etc. They are widely used as surfactants in textiles, leather, Pesticides, carpets, furniture and other fields. Studies have shown that it has various toxic effects such as causing lipid peroxidation, teratogenicity, carcinogenicity and neurotoxicity in the body. Perfluorinated compounds are difficult to degrade in the environment, can be transported over long distances, and accumulate and amplify in animals and humans along the food chain, so perfluorinated compounds have been identified as a persistent organic pollutant.

[0003] The existing pretreatment of perfl...

Claims

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