期刊
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
卷 26, 期 10, 页码 2077-2087出版社
SOC BRASILEIRA QUIMICA
DOI: 10.5935/0103-5053.20150192
关键词
pesticides; solid phase extraction; LC-MS/MS; GC-MS/MS; water analysis
资金
- Brazilian National Council for Technological and Scientific Development (CNPq)
- Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES)
In this work, a method for multiclass determination of 70 pesticides residues with different properties in drinking water using solid phase extraction (SPE) with polymeric sorbent and determination by gas and liquid chromatography coupled to tandem mass spectrometry (GC-MS/MS and LC-MS/MS) was developed and validated. Different sample volumes, sorbents and elution solvents were evaluated. The best results were obtained using the sorbent Oasis (R) HLB, sample acidified at pH 2.5 and a mixture of dichloromethane/methanol as eluent. The limit of quantification (LOD) of the method was 0.02 mu g L-1 for aldrin, dieldrin and chlordane and 0.5 mu g L-1 for the other compounds. Satisfactory accuracy, with recoveries between 70 and 117.3%, and good precision, with relative standard deviation (RSD) values below 19.7% for most of the compounds, were achieved. The validated method was applied to real water samples and results indicated that the proposed method is suitable for the determination of pesticide residues in water samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据