文献类型： 外文期刊

作者： Wang Jiao ¹ ; Qi Pei-Pei ¹ ; Liu Zhen-Zhen ¹ ; Sun Yu-Han ¹ ; Wang Zhi-Wei ¹ ; Wang Xiang-Yun ¹ ; Xu Hao ¹ ; Di Shan-Shan ¹ ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Soil; Magnetic dispersive solid phase extraction; Ultra-performance liquid chromatography-tandem mass spectrometry; Multi-pesticides residue

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2019 年 47 卷 2 期

页码：

收录情况： SCI

摘要： A simple and rapid sample pretreatment method was developed based on magnetic nanoparticles for multi-pesticides residue analysis in soil samples. The target analytes were extracted by acetonitrile under the assistance of ultra-sonication, followed by the purification of dispersive solid phase extraction. The magnetite (Fe3O4) nanoparticles modified with 3-( N, N-diethylamino ) propyltrimethoxysilane (Fe3O4-PSA) and commercial C-18 were selected as the cleanup adsorbents to remove the matrix interferences. The target analytes were further analyzed by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLCMS/MS). The factors influencing the recoveries of analytes, such as extraction time, amount of Fe3O4-PSA and C-18 were optimized. The optimal extraction time was 10 min, and the amount of Fe3O4-PSA and C-18 were 40 mg and 30 mg, respectively. The method showed good linearity in the concentration range from 2 mu g/L to 250 mu g/L except for 3-hydroxy-carbofuran and isocarbophos (5 mu g/L to 250 mu g/L). The limits of detection ( LODs ) ranged from 0.1 mu g/L to 1.0 mu g/L. The recoveries ranged from 74.1% to 120.0% at three spiked concentration levels with relative standard deviations of lower than 18. 1 % . The proposed method was rapid , simple, low-cost and effective for detection of trace multi-pesticides residue in soil.