Microwave-Assisted "One-Pot" Acidolysis and Extraction for the Rapid Determination of Mancozeb in Fruit and Vegetable Samples
文献类型： 外文期刊
作者： Tian, Qiaoxia 1 ; Li, Hongxing 1 ; Chen, Lixia 2 ; Han, Bingjun 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Hainan Prov Key Lab Qual & Safety Trop Fruits & Ve, Key Lab Nutr Qual & Hlth Benefits Trop Agr Prod Ha, Anal & Test Ctr,Minist Agr Rural Affairs,Key Lab Q, Haikou 571101, Hainan, Peoples R China
2.Qiongtai Normal Univ, Coll Sci, Haikou 571127, Hainan, Peoples R China
期刊名称：JOURNAL OF FOOD QUALITY （ 影响因子：3.3； 五年影响因子：3.5 ）
ISSN： 0146-9428
年卷期： 2024 年 2024 卷
页码：
收录情况： SCI
摘要： Mancozeb is an extensively consumed fungicide, which often leaves high residue levels on agricultural products. The conventional method for detecting mancozeb involves a time-consuming process using gas chromatography (GC) after a 2-hour water-bath acidolysis, resulting in low efficiency and recovery rates. This study developed a rapid method for detecting mancozeb in fruits and vegetables using microwave-assisted acidolysis and extraction coupled with GC analysis. Mancozeb underwent "one-pot" acidolysis to generate CS2 gas and was subsequently extracted from samples using microwave treatment, requiring only 50 seconds of pretreatment time. The average recoveries of mancozeb ranged from 81% to 112%. The limit of detection and limit of quantification were 0.003 and 0.01 mg kg-1, respectively. The scanning electron microscope imaging showed that strong cell crumpling after microwave treatment improved the acidolysis rate significantly, where the acidolysis rate was 91.8% for mancozeb. In addition, this method is rapid, simple, and precise for detecting residues of mancozeb and other dithiocarbamate fungicides.
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