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首页> 外文期刊>Journal of environmental science and health >Multiresidue determination of carbamate, organochlorme, organophosphorus, and dicarboximide pesticides in lettuce by GC/MS
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Multiresidue determination of carbamate, organochlorme, organophosphorus, and dicarboximide pesticides in lettuce by GC/MS

机译：气相色谱/质谱法测定生菜中的氨基甲酸酯，有机氯，有机磷和双羧酰亚胺农药

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摘要

An extraction method based on matrix solid-phase dispersion was developed to determine pirimicarb, methyl parathion, malathion, procymidone, α-endosulfan and β-endosulfan in lettuce using gas chromatography-mass spectrometry. The best results were obtained using 4.0 g of lettuce, 2.0 g of silica as dispersant sorbent, 0.1 g of activated carbon as clean up sorbent and acetonitrile as eluting solvent. The method was validated using lettuce samples fortified with pesticides at six different concentration levels (0.1 to 2.0 mg/kg). Average recoveries (7 replicates) ranged from 50 to 120 %, with relative standard deviations between 0.6 and 8.0 %. Detection and quantification limits for lettuce ranged from 0.01 to 0.02 mg/kg and 0.04 to 0.10 mg/kg, respectively.
机译：建立了一种基于基质固相分散的萃取方法，采用气相色谱-质谱法测定生菜中的嘧啶威，甲基对硫磷，马拉硫磷，嘧啶酮，α-硫丹和β-硫丹。使用4.0 g生菜，2.0 g二氧化硅作为分散剂吸附剂，0.1 g活性炭作为净化吸附剂以及乙腈作为洗脱溶剂，可获得最佳结果。使用六种不同浓度水平（0.1至2.0 mg / kg）的农药强化的生菜样品验证了该方法的有效性。平均回收率（7次重复）的范围为50％至120％，相对标准偏差为0.6％至8.0％。生菜的检出限和定量限分别为0.01至0.02 mg / kg和0.04至0.10 mg / kg。

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