Temperature-Controlled Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High Performance Liquid Chromatography for the Determination of Fungicide Residues in Fruit Juices

doi:10.7506/spkx1002-6630-201504040

FOOD SCIENCE

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Temperature-Controlled Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High Performance Liquid Chromatography for the Determination of Fungicide Residues in Fruit Juices

ZHANG Yan1,2, ZHAO Qiyang1,3,4, ZHANG Yaohai1,3,4,5, JIAO Bining1,2,3,4,5,*

1. Citrus Reserch Institute, Chinese Academy of Agricultural Sciences/Southwest University, Chongqing 400712, China;
2. College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China;
3. Laboratory of Quality & Safty Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, China;
4. Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, China;
5. National Center for Citrus Engineering, Chongqing 400712, China

Online:2015-02-25 Published:2015-02-16
Contact: JIAO Bining

Abstract

Abstract:

A novel method was developed for the determination of seven fungicide residues in fruit juices using temperaturecontrolled
ionic liquid dispersive liquid-liquid microextraction (IL-DLLME) coupled with high performance liquid
chromatography with photodiode array detection (HPLC-PDA). Parameters affecting the extraction performance such as the
type and volume of extraction and dispersive solvents, temperature, extraction time and centrifugation time were studied and
optimized. Under optimized conditions, the enrichment factors ranged from 64 to 101, and the limits of detection of the established
method were in the range of 4.3–13.0 μg/L. The recoveries from apple, pear, grape, peach and orange juices at three fortified levels
of 0.02, 0.05 and 0.10 mg/L ranged from 70.0% to 116.2% with relative standard deviations (RSDs) less than 9.8%. Therefore, this
method can meet the requirements for the determination of fungicide residues in various fruit juices.

Key words: ionic liquid (IL), dispersive liquid-liquid microextraction (DLLME), fungicide, fruit juice

CLC Number:

S481.8

ZHANG Yan1,2, ZHAO Qiyang1,3,4, ZHANG Yaohai1,3,4,5, JIAO Bining1,2,3,4,5,*. Temperature-Controlled Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High Performance Liquid Chromatography for the Determination of Fungicide Residues in Fruit Juices[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201504040.

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Temperature-Controlled Ionic Liquid Dispersive Liquid-Liquid Microextraction Coupled with High Performance Liquid Chromatography for the Determination of Fungicide Residues in Fruit Juices

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