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Investigation and Validation of Detection of Storage Stability of Difenoconazole Residue in Mango

文献类型： 外文期刊

作者： Zhao, Fangfang 1 ; Liu, Jingkun 1 ; Han, Bingjun 1 ; Luo, Jinhui 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Anal & Testing Ctr, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

2.Minist Agr, Lab Qual & Safety Risk Assessment Trop Prod Haiko, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

3.Hainan Prov Key Lab Qual & Safety Trop Fruits & V, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

4.Qual Supervis & Inspect Ctr Trop Agroprod, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

期刊名称：JOURNAL OF FOOD QUALITY （ 影响因子：2.45； 五年影响因子：2.679 ）

ISSN： 0146-9428

年卷期： 2019 年

页码：

收录情况： SCI

摘要： To investigate the stability of the pesticide residue in storage samples is a part of detection, which is also an improvement to the accuracy of analytical results. In this work, the UPLC-MS/MS method with perfect accuracy and stability was established for determining residues of difenoconazole in mango. The stability of the residue under different temperatures (4 degrees C and -20 degrees C) and media (fruit samples and pretreated sample solution) was investigated. At 0.1mg/kg, the residue degraded in 6months by 12% when at -20 degrees C, while in a week by only 12.2% at 4 degrees C. However, when pretreated and preserved in the solution, the residue remained more than 90% for 6-8weeks. The results indicated that the main causes of degradation are biochemical factors, and the factors are affected by temperature. The findings also provided appropriate conditions for sample storage. This investigation promotes the accuracy in detection and hence guarantees food safety and quality.

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