Determination of Fungicides in Fruit Juice by Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Solvent Droplets Followed by High Performance Liquid Chromatography
文献类型： 外文期刊
作者： Fan, Run-Zhen 1 ; Liu, Congyun 2 ; Jiang, Wenqing 2 ; Wang, Xiaonan 2 ; Liu, Fengmao 2 ;
作者机构： 1.Guangdong Ocean Univ, Coll Sci, Zhanjiang 524025, Peoples R China
2.China Agr Univ, Coll Sci, Beijing 100193, Peoples R China
3.Guangdong Acad Agr Sci, Publ Monitoring Ctr Agroprod, Guangzhou 510640, Guangdong, Peoples R China
期刊名称：JOURNAL OF AOAC INTERNATIONAL （ 影响因子：1.913； 五年影响因子：1.754 ）
ISSN： 1060-3271
年卷期： 2014 年 97 卷 1 期
页码：
收录情况： SCI
摘要： Ultrasound-assisted dispersive liquid liquid microextraction (UA-DLLME) based on solidification of the floating organic solvent droplets (SFO) combined with HPLC was used for determination of five fungicides in fruit juice samples. 1-Dodecanol, which has a low density and low toxicity, was used as the extraction solvent in UA-DLLME. The solidification of floating organic droplets facilitates the transfer of analytes from the aqueous phase to the organic phase. This method was easy, quick, inexpensive, precise, and linear over a wide range. Under the optimized conditions, the enrichment factors for a 5 mL fruit juice sample were 25 to 56, and the LODs for the five fungicides ranged from 5 to 50 mu g/L. The average recoveries ranged from 71.8 to 118.2% with RSDs of 0.9 to 13.9%. Application of the DLLME-SFO technique allows successful separation and preconcentration of the fungicides at a low concentration level in fruit juice samples.
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