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Simultaneous determination of florfenicol with its metabolite based on modified quick, easy, cheap, effective, rugged, and safe sample pretreatment and evaluation of their degradation behavior in agricultural soils

文献类型： 外文期刊

作者： Xu, Mingfei 1 ; Qian, Mingrong 1 ; Zhang, Hu 1 ; Ma, Junwei 2 ; Wang, Jianmei 1 ; Wu, Huizhen 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Standard Agroprod, State Key Lab Breeding Base Zhejiang Sustainable, MOA Key Lab Pesticide Residue Detect, Hangzhou 310021, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Environm Resources & Soil Fertilizer Inst, Hangzhou 310021, Zhejiang, P

关键词： Agricultural soil;Degradation;Florfenicol;Florfenicol amine;Tandem mass spectrometry

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

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收录情况： SCI

摘要： A simple and simultaneous method for the determination of florfenicol and its metabolite florfenicol amine in agricultural soils using modified quick, easy, cheap, effective, rugged, and safe sample pretreatment and reversed-phase high-performance liquid chromatography with tandem mass spectrometry is presented. Florfenicol and its metabolite florfenicol amine residues in agricultural soils were extracted with alkalized acetonitrile and an aliquot was cleaned up with Si(CH2)(3)NH(CH2)(2)NH2 and C-18 sorbent, which were powder materials. High-performance liquid chromatography with tandem mass spectrometry was applied to simultaneously determine the level of florfenicol and florfenicol amine in agricultural soils. Excellent linearity was achieved for florfenicol and florfenicol amine over a range of concentrations from 0.1-500 mu g/L with coefficients more than 0.99. Average recoveries at four different levels (0.005, 0.05, 0.5, and 5.0 mg/kg) for florfenicol and florfenicol amine ranged from 73.6-94.9% with relative standard deviations of 2.9-12.5%. The limits of detection for florfenicol and florfenicol amine in agricultural soils were 2.0 mu g/kg, and the limits of quantification were 6.0 mu g/kg. Based on this method, the degradation behavior of florfenicol and its metabolite florfenicol amine in three soils (Nanchang, Hangzhou, and Changchun) under sterilized and native conditions was investigated and the transformation rate of florfenicol amine from florfenicol was evaluated.

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