数字农科院2.0

Determination of 90 Pesticide Residues in Fruit Juices Using QuEChERS Cleanup and Programmable Temperature Vaporizer-based Large Volume Injection by Gas Chromatography- Mass Spectrometry

文献类型： 外文期刊

作者： Zhang Chi;Pan Jia-Rong;Liang Shi-Zheng;Feng Tao;Fu Li-Li;Song Ying;Sui Ke;Song Ying;Jiao Bi-Ning;Zhang Chi

作者机构：

关键词： Fruit juices;Multi-residue pesticides;Large volume injection;Gas chromatography-mass spectrometry;QuEChERS

期刊名称： CHINESE JOURNAL OF ANALYTICAL CHEMISTRY

ISSN： 0253-3820

年卷期： 2015 年 43 卷 8 期

页码：

收录情况： SCI

摘要： A gas chromatography-mass spectrometric (GC-MS) method was established for the simultaneous determination of 90 pesticide residues in fruit juices using programmable temperature vaporizer-based large volume injection (PTV-LVI) and QuEChERS Cleanup. The pesticides of fruits sample was extracted with acetonitrile, and after the water in the extractant was removed with anhydrous magnesium sulfate and sodium chloride, the pesticides were further cleaned up with dispersive method on PSA and C-18, and detected by gas chromatography-tandem mass spectrometry under multiple reaction monitoring mode. Under the optimum PTV- LVI parameters including inlet temperature of 100 degrees C, split vent flow rate at 50 mL/min, 1.5 min of evaporation time and 2 mu L/s of injection speed, GC-MS analysis for the pesticides was carried out. The results showed that, in the pesticides concentration range of 0.05 - 10 mu g/L, the method kept good linear relationships with the correlative coefficients between 0.9879 and 0.9999. The recoveries of the pesticide were from 70.3% to 119.2%, the relative standard deviations (RSDs) were between 3.4% and 15.6%. The limits of detection (LOD) were below 10 mu g/kg and the limit of Quantitation (LOQ) was less than 20 mu g/kg. The method is simple, quick, safe, reproducible and applicable to confirm pesticide residue in the fruit juices samples.

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