期刊
JOURNAL OF CHROMATOGRAPHY A
卷 919, 期 2, 页码 381-388出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(01)00816-0
关键词
water analysis; environmental analysis; liquid-phase microextraction; extraction methods; organochlorine compounds; pesticides
Static liquid-phase microextraction, with subsequent analysis by gas chromatography-electron-capture detection, has been applied to extract eight organochlorine pesticides from water. A conventional microsyringe was used to extract analytes from water samples over a concentration range of 0.05-100 mug/l. Factors relevant to the extraction process were investigated. The sensitivity of the method was enhanced with agitation, and increasing the extraction temperature, of the sample solution. Concentration factors of > 50-fold were easily achieved within 25 min of extraction. The analytical data exhibited a relative standard deviation (RSD) range of 3.2% (lindane) to 10.7% (methoxychlor) for the eight pesticides; most RSD values were under 7%. Water samples collected from a reservoir, and from tap water in a chemical laboratory were analyzed using the procedure. (C) 2001 Elsevier Science B.V. All rights reserved.
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