期刊
JOURNAL OF SEPARATION SCIENCE
卷 35, 期 4, 页码 534-540出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201100870
关键词
Cigarette filter; GC; MS; Multi-residue; Pesticides; Solid-phase extraction
资金
- Ministry of Science and Technology of China [2009BADB9B07, 2009BADB9B06]
- National Natural Science Foundation of China [31171683, 30872126]
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 (r2>0.99) from 0.1 to 20 mu g/L for water and from 2 to 400 mu g/kg for soil samples. The detection limits (signal-to-noise=3) of the proposed method ranged from 0.01 to 0.20 mu g/L for water samples and from 0.42 to 6.95 mu g/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%.
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