Enantioselective determination of acylamino acid fungicides in vegetables and fruits by chiral liquid chromatography coupled with tandem mass spectrometry

文献类型: 外文期刊

第一作者: Zhang, Hu

作者: Zhang, Hu;Wang, Xinquan;Qian, Mingrong;Wang, Xiangyun;Xu, Hao;Qi, Peipei;Wang, Qiang;Zhang, Hu;Wang, Xinquan;Qian, Mingrong;Wang, Xiangyun;Xu, Hao;Qi, Peipei;Wang, Qiang;Zhang, Hu;Wang, Xinquan;Qian, Mingrong;Wang, Xiangyun;Xu, Hao;Qi, Peipei;Wang, Qiang;Zhang, Hu;Wang, Minghua;Zhang, Hu;Wang, Minghua;Jin, Lixia

作者机构:

关键词: Benalaxyl;Enantioselective analysis;Furalaxyl;HPLC-MS/MS;Metalaxyl

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: An efficient and sensitive enantioselective method for simultaneous determination of three acylamino acid fungicides in vegetables and fruits was presented by high-performance liquid chromatography (HPLC) coupled with tandem mass spectrometry. The three fungicides (benalaxyl, furalaxyl, and metalaxyl) residues in samples were extracted with acetonitrile containing 1% acetic acid and an aliquot was cleaned up with Si-(CH _2) _3-NH-(CH _2) _2-NH _2 and C _(18) sorbent. Complete enantioseparation of three acylamino acid fungicides enantiomers was obtained under reversed-phase conditions on a cellulose tris (4-chloro-3- methylphenylcarbamate) column at 25°C using acetonitrile-0.1% formic acid solution (45:55, v/v) as a mobile phase. The elution orders of the eluted enantiomers were determined by a circular dichroism (CD) detector. The linearity, matrix effect, recovery, and precision were evaluated. Good linearity was obtained over the concentration range of 0.5-250 μg/L for each enantiomer in the standard solution and sample matrix calibration curves. There was no significant matrix effect for three fungicides determination based on the method. The inter-day mean recoveries, intra-day repeatability, and inter-day reproducibility varied from 81.3 to 95.7%, 2.2 to 9.4%, and 2.3 to 9.6%, respectively. The method provided high selectivity and sensitivity, and limits of quantification for enantiomers of three fungicides in vegetables and fruits were both 1 μg/kg.

分类号: O6

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