Rapid and sensitive detection of the phenoxy acid herbicides in environmental water samples by magnetic solid-phase extraction combined with liquid chromatography-tandem mass spectrometry
文献类型： 外文期刊
第一作者： Peng, Mao-Min
作者： Peng, Mao-Min;Xia, Hong;Hu, Xi-Zhou;Zhou, You-Xiang;Peng, Li-Jun;Peng, Xi-Tian;Han, Ya-Quan;Peng, Xi-Tian
作者机构： Hubei Acad Agr Sci, Inst Agr Qual Stand & Testing Technol Res, Wuhan 430064, Hubei, Peoples R China;Ocean Univ China, Coll Marine Life Sci, Qingdao, Peoples R China;Wuhan Univ, Minist Educ, Key Lab Analyt Chem Biol & Med, Wuhan, Hubei, Peoples R China
关键词： liquid chromatography; magnetic solid-phase extraction; multiwalled carbon nanotubes; phenoxy acid herbicides; tandem mass spectrometry Institute
期刊名称：JOURNAL OF SEPARATION SCIENCE （ 2020影响因子：3.645； 五年影响因子：2.943 ）
ISSN： 1615-9306
年卷期： 2018 年 41 卷 10 期
收录情况： SCI
摘要： Phenoxy acid herbicides are widely used herbicides that play an important role in improving the yield and quality of crops. However, some research has shown that this kind of herbicide is poisonous to human and animals. In this study, a rapid and sensitive method was developed for the detection of seven phenoxy acid herbicides in water samples based on magnetic solid-phase extraction followed by liquid chromatography and tandem mass spectrometry. Magnetic amino-functionalized multiwalled carbon nanotubes were prepared by mixing bare magnetic Fe3O4 nanoparticles with commercial amino-functionalized multiwalled carbon nanotubes in water. Then the amino-functionalized multiwalled carbon nanotubes were used to enrich phenoxy acid herbicides from water samples based on hydrophobic and ionic interactions. The effects of experimental variables on the extraction efficiency have been studied in detail. Under the optimized conditions, the method validation was performed. Good linearities for seven phenoxy acid herbicides were obtained with squared regression coefficients ranging from 0.9971 to 0.9989. The limits of detection ranged from 0.01 to 0.02 mu g/L. The method recoveries of seven phenoxy acid herbicides spiked at three concentration levels in a blank sample were from 92.3 to 103.2%, with inter- and intraday relative standard deviations less than 12.6%.
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