期刊
FOOD CHEMISTRY
卷 162, 期 -, 页码 270-276出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.04.060
关键词
Organophosphorus pesticide; Alpinia oxyphylla; Multi-component determination; Gas chromatography-flame photometric detection; Gas chromatography-tandem mass spectrometry
资金
- Modernization of Traditional Chinese Medicine of Hainan Province [2010ZY011]
- Major Science and Technology Project of Hainan Province [ZDZX2013008]
- Fundamental Research Funds for Central Public Welfare Research Institutes [2011HNB04]
A simple, rapid and effective gas chromatography-flame photometric detection method was established for simultaneous multi-component determination of 31 organophosphorus pesticides (OPPs) residues in Alpinia oxyphylla, which is widely consumed as a traditional medicine and food in China. Sample preparation was completed in a single step without any clean-up procedure. All pesticides expressed good linear relationships between 0.004 and 1.0 mu g/mL with correlation coefficients higher than 0.9973. The method gave satisfactory recoveries for most pesticides. The limits of detection varied from 1 to 10 ng/ mL, and the limits of quantification (LOQs) were between 4 and 30 ng/mL. The proposed method was successfully applied to 55 commercial samples purchased from five different areas. Five pesticide residues were detected in four (7.27%) samples. The positive samples were confirmed by gas chromatography with tandem mass spectrometry (GC-MS/MS). (C) 2014 Elsevier Ltd. All rights reserved.
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