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J Sep Sci

Title:		Inhibiting sorbent stripping by designing a sorbent-packed porous probe for headspace solid-phase microextraction
Author(s):		Qin S; Tao G; Yunjie H; Shuangshuang X; Luyan L; Hongyan X;
Address:		"Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, P. R. China. Wuhan Center of China Geological Survey, Wuhan, P. R. China. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, P. R. China"
Journal Title:		J Sep Sci
Year:		2015
Volume:		20150909
Issue:		20
Page Number:		3582 - 3587
DOI:		10.1002/jssc.201500370
ISSN/ISBN:		1615-9314 (Electronic) 1615-9306 (Linking)
Abstract:		"To prevent the stripping of coating sorbents in headspace solid-phase microextraction, a porous extraction probe with packed sorbent was introduced by using a porous stainless steel needle tube and homemade sol-gel sorbents. The traditional stainless-steel needle tube was punched by a laser to obtain two rows of holes, which supply a passageway for analyte vapor during extraction and desorption. The sorbent was prepared by a traditional sol-gel method with both poly(ethylene glycol) and hydroxy-terminated silicone oil as coating ingredients. Eight polycyclic aromatic hydrocarbons and six benzene series compounds were used as illustrative semi-volatile and volatile organic compounds in sequence to verify the extraction performance of this porous headspace solid-phase microextraction probe. It was found that the analysis method combining a headspace solid-phase microextraction probe and gas chromatography with mass spectrometry yielded determination coefficients of no less than 0.985 and relative standard deviations of 4.3-12.4%. The porous headspace solid-phase microextraction probe showed no decrease of extraction ability after 200 uses. These results demonstrate that the packed extraction probe with porous structure can be used for headspace solid-phase microextraction. This novel design may overcome both the stripping and breakage problems of the conventional coating fiber"
Keywords:		Headspace Porous probe Sample preparation Sol-gel processes Sorbent stripping;
Notes:		"PubMed-not-MEDLINEQin, Shuai Tao, Gu Yunjie, Huang Shuangshuang, Xu Luyan, Li Hongyan, Xiao eng Germany 2015/08/08 J Sep Sci. 2015 Oct; 38(20):3582-7. doi: 10.1002/jssc.201500370. Epub 2015 Sep 9"