Screening for pesticide residues in oil seeds using solid-phase dispersion extraction and comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry

文献类型: 外文期刊

第一作者: Li, Peiwu

作者: Li, Peiwu;Wang, Xiupin;Li, Peiwu;Zhang, Wen;Wang, Xiupin;Li, Peiwu;Zhang, Qi;Ma, Fei;Yu, Li;Wang, Lin;Li, Peiwu;Zhang, Qi;Ma, Fei;Yu, Li;Wang, Lin;Ma, Fei;Yu, Li;Wang, Lin

作者机构:

关键词: Comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry;Oil absorbing matrix solid-phase dispersion extraction;Oilseed/Pesticide residues;Screening

期刊名称:JOURNAL OF SEPARATION SCIENCE ( 影响因子:3.645; 五年影响因子:2.943 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: In this paper, we describe the development of an oil-absorbing matrix solid-phase dispersion extraction with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry suitable for screening of 68 pesticide residues (PRs) in peanut, soybean, rape seed, sesame, and sunflower seed. The 68 PRs include 27 kinds of organophosphorus, 23 organic chlorines, 11 synthetic pyrethroids, and 7 carbamates. Heptachlor epoxide was used as the internal standard. Aminopropyl silica was chosen as the dispersion sorbent of the oil-absorbing matrix solid-phase dispersion extraction and was applied to capture hydrophobic components from high oil samples. A 35-min orthogonal separation was performed by using comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry with a nonpolar-polar column set. Identification of 68 PRs in the extract was finished by using the time-of-flight mass spectrometry in the assistance of an automated peak-find and spectral deconvolution software. A screening based on control design was introduced and explained. This screening method considerably reduced the cost for the quantitative and confirmatory analyses. The quality of present screening method was evaluated by the Document No. SANCO/10684/2009. The false positive rate and false negative rate provide a useful tool for the evaluation of screening performance.

分类号: O6

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