Residue analysis of kresoxim-methyl and boscalid in fruits, vegetables and soil using liquid-liquid extraction and gas chromatography-mass spectrometry

文献类型： 外文期刊

第一作者： Dong, Fengshou

作者： Dong, Fengshou;Zheng, Yongquan;Qin, Dongmei

作者机构：

关键词： fungicide residue;boscalid;kresoxim-methyl;gas chromatography-mass spectrometry (GC-MS)

期刊名称：BIOMEDICAL CHROMATOGRAPHY （ 影响因子：1.902； 五年影响因子：1.809 ）

ISSN： 0269-3879

年卷期： 2010 年 24 卷 4 期

页码：

收录情况： SCI

摘要： A GC-MS procedure for simultaneously determining and validating kresoxim-methyl and boscalid has been developed in fruit, vegetable and soil matrices. The method was based on one-step liquid-liquid extraction with acetone and dichloromethane solvents. Estimated limits of detection (LODs) for kresoxim-methyl and boscalid were 0.006 and 0.015 mg/kg, and limits of quantification (LOQs) were 0.02 and 0.05 mg/kg, respectively. The intra- and inter- precision were achieved with RSD better than 13.8 and 14.5%, and recoveries were in the range of 77.1-98.7% for kresoxim-methyl and 72.8-105.1% for boscalid. The expanded uncertainties calculated at 0.1 mg/kg were below 18%. Concentration levels for residues of the two fungicides in melon samples from field trials collected 7 days after the last application were clearly below the established MRL values. Copyright (C) 2009 John Wiley & Sons, Ltd.

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