Extraction of organophosphorus pesticides in water and juice using ultrasound-assisted emulsification-mixroextraction

文献类型: 外文期刊

第一作者: Jia, Chunhong

作者: Jia, Chunhong;Zhu, Xiaodan;Chen, Li;He, Min;Yu, Pingzhong;Zhao, Ercheng

作者机构:

关键词: GC;Juice;Organophosphorus pesticides;Residue analysis;Ultrasound-assisted emulsification-microextraction;Water

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: In this study, a microextraction method termed as ultrasound-assisted emulsification-microextraction (USAEME) has been developed for the extraction of organophosphorus pesticides (OPPs) in water and orange juice samples. In the USAEME method, aliquots of 50 mu L chlorobenzene used as extraction solvent was added to 10 mL water sample in a conical glass centrifugal tube. Factors influencing the USAEME extraction efficiency such as sonication time, extraction solvent, extraction volume and salt addition were evaluated. Under the optimum conditions, enrichment factors ranged from 241 to 311, LOD varied from 5.3 to 10.0 ng/L and linearity with a coefficient of estimation (r(2)) varied from 0.9991 to 0.9998 in the concentration level range of 0.05-2.5 mu g/L for the extraction of OPPs in water samples. Finally, the proposed USAEME method was used for the extraction of OPPs from water and orange juice. The recoveries were in the range of 80.0-110.0%, and the repeatability of the method expressed as RSD (n = 3) varied between 1.6 and 13%. The USAEME method has the advantage of being easy to operate, low consumption of organic solvent and high extraction efficiency.

分类号: O6

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