中文摘要：本文以多壁碳纳米管（碳纳米管）作为反分散固相萃材料构建了一种豇豆中171种农药残留的快速、灵敏的检测方法。试验结果表明：多壁碳纳米管MWCNTs的净化性能明显优于PSA 和GCB，在 0.01和0.1 mg/kg加标水平下，除吡氟草胺和喹禾灵外，其余169种农药残留的回收率为74-129%，相对标准差小于16.4%。所有农药残留检测结果的标准曲线相关系数都大于0.9970，且检测限为0.001-0.003 μg/kg，定量限为 0.002-0.009μg/kg。该方法在豇豆171种农药残留的常规监测方面可靠性高、灵敏强。
外文摘要：A rapid and sensitive method for the determination of 171 pesticides in cowpea was developed using multi-walled carbon nanotubes (MWCNTs) as reversed-dispersive solid-phase (r-DSPE) extraction materials. The clean-up performance of MWCNTs was proved to be obviously superior to PSA and GCB. This method was validated on cowpea spiked at 0.01 and 0.1 mg kg(-1) with five replicates. The mean recoveries for 169 pesticides ranged from 74% to 129% with relative standard deviations (RSDs) (n =5) lower than 16.4%, except diflufenican and quizalofop-ethyl. Good linearity for all pesticides was obtained with the calibration curve coefficients (R-2) larger than 0.9970. The limit of detection (LODs) and limit of quantification (LOQs) for the 171 pesticides ranged from 0.001 to 0.003 mg kg(-1) and from 0.002 to 0.009 mg kg(-1), respectively. The method was demonstrated to be reliable and sensitive for the routine monitoring of the 171 pesticides in cowpea samples. (C) 2016 Elsevier B.V. All rights reserved.
外文关键词：Cowpea, MWCNTs, r-DSPE, Pesticide residues
作者：Han, Yongtao; Song, Le; Zou, Nan; Chen, Ronghua; Qin, Yuhong; Pan, Canping
作者单位：China Agr Univ, Dept Appl Chem, Coll Sci, Beijing 100193, Peoples R China.
期刊名称：JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
期刊影响因子：2.687
出版年份：2016
出版刊次：9
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