Determination of 1-methylcyclopropene residues in vegetables and fruits based on iodine derivatives
文献类型： 外文期刊
作者： Dong, Maofeng 1 ; Wen, Guangyue 1 ; Li, Junshun 1 ; Wang, Tan 1 ; Huang, Jiaqing 1 ; Li, Yubo 1 ; Tang, Hongxia 1 ; Sun, 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Pesticide Safety Evaluat Res Ctr, Shanghai 2011106, Peoples R China
关键词： 1-methylcyclopropene; GC-MS; MS; Vegetables; Fruits
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN： 0308-8146
年卷期： 2021 年 358 卷
页码：
收录情况： SCI
摘要： An innovative method was established for the determination of 1-methylcyclopropene (1-MCP) in vegetables and fruits. Due to its small molecular weight and low boiling point, it was difficult to obtain quantitative analysis for 1-MCP, especially at the residual level. In this work, based on its iodine derivatives, 1-MCP was derived to 1,2diiodo-1-methylcyclopropane, which was much easier for trace and accurate chromatographic analysis. During the method validation, the method validation results were satisfactory in terms of linearity (4 - 400 mu g/L, and R2 0.959), matrix effect (-89% - -13%), accuracy (80 - 100%), sensitivity (limits of quantification, 5 mu g/kg) and precision (relative standard deviations < 19%), which was in accordance with the Chinese guidelines for the testing of pesticide residues in crops. Finally, the proposed analytical method was used to monitor the 1-MCP residue levels in commercially available samples, and all the values were below 5 mu g/kg, which satisfied the EU or Japan MRLs of 1-MCP.
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