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Multi‐residue determination of organophosphorus and organochlorine pesticides in environmental samples using solid‐phase extraction with cigarette filter followed by gas chromatography–mass spectrometry
Author(s) -
Fang Guozhen,
Chen Wen,
Yao Yunping,
Wang Junping,
Qin Junyan,
Wang Shuo
Publication year - 2012
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201100870
Subject(s) - chromatography , solid phase extraction , chemistry , elution , detection limit , mass spectrometry , extraction (chemistry) , gas chromatography , gas chromatography–mass spectrometry , column chromatography , sorbent , soil test , analyte , sample preparation , soil water , adsorption , environmental science , organic chemistry , soil science
A solid‐phase extraction (SPE) method was developed to extract 14 pesticides simultaneously from environment samples using cigarette filter as the sorbent before gas chromatography‐mass spectrometry (GC‐MS) analysis. Parameters influencing the extraction efficiency, such as the sample loading flow rate, eluent and elution volume, were optimized. The optimum sample loading rate was 3 mL/min, and the retained compounds were eluted with 6 mL of eluent at 1 mL/min under vacuum. Good linearity was obtained for all the 14 pesticides ( r 2 >0.99) from 0.1 to 20 μg/L for water and from 2 to 400 μg/kg for soil samples. The detection limits (signal‐to‐noise=3) of the proposed method ranged from 0.01 to 0.20 μg/L for water samples and from 0.42 to 6.95 μg/kg for soil samples. The developed method was successfully applied for determination of the analytes in real environmental samples, and the mean recoveries ranged from 76.4 to 103.7% for water samples and from 79.9 to 105.3% for soil samples with the precisions (relative standard deviation) between 2.0 and 13.6%.