农药学学报2024，Vol.26Issue(1)：203-210,8.DOI:10.16801/j.issn.1008-7303.2023.0090
氯氟醚菌唑在香蕉和芒果果实中的残留分布
Residue distribution of mefentrifluconazole in banana and mango fruits
摘要
Abstract
A residual analysis method for mefentrifluconazole in banana and mango was established using ultra high performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS)detection technology.The field trial was conducted in banana and mango at six sites during one year according to NY/T 788-2018 the"Guideline for the Testing of Pesticide Residues in Crops"to study the degradation dynamics and residual distribution of mefentrifluconazole.After the application of the formulation of mefentrifluconazole 400 g/L suspension concentration(SC)on banana and mango crops,fruit samples were extracted with acetonitrile,purified with combined adsorbents of GCB and C18,and analyzed by UPLC-MS/MS.The results showed that at four spiked levels of 0.001-1 mg/kg,the average recovery of mefentrifluconazole in whole banana and flesh was 83％-93％with the relative standard deviation(RSD)2.3％to 5.9％,and the average recovery of mefentrifluconazole in whole mango and flesh was 82％-91％with the RSD 2.9％to 6.0％,respectively;and the limit of quantification(LOQ)was 0.001 mg/kg.The field trials in banana showed that,under the condition of applying mefentrifluconazole 400 g/L SC at dosage of 133.3 mg/kg for 3 times with application interval of 7-10 days,the residues of mefentrifluconazole at 21 and 28 days after the last application were 0.03-0.09 mg/kg in whole banana and<0.001-0.004 mg/kg in the flesh.In the field trials of mango,under the condition of applying mefentrifluconazole 400 g/L SC at dosage of 160 mg/kg for 3 times with application interval of 7-10 days,residues of mefentrifluconazole were 0.04-0.28 mg/kg in whole mango and 0.001-0.003 mg/kg in the flesh at 14 and 21 days after the last application.The research results can provide a reference for guiding the scientific and rational use of mefentrifluconazole in banana and mango,as well as for the establishment of its maximum residue limit(MRL)values.关键词
氯氟醚菌唑/香蕉/芒果/残留Key words
mefentrifluconazole/banana/mango/residue分类
化学化工引用本文复制引用
王思威,王潇楠,常虹,刘艳萍..氯氟醚菌唑在香蕉和芒果果实中的残留分布[J].农药学学报,2024,26(1):203-210,8.基金项目
2021年省级乡村振兴战略专项省级项目(粤财[2021]37号) （粤财[2021]37号）
乡村振兴战略专项资金(农业科技能力提升)(2023TS-2-5、2023TS-2-3) （农业科技能力提升）
广州市科技计划项目(202201010479) （202201010479）
广东省基础和应用基础研究基金(2022A1515110473). Supported by 2021 Provincial Rural Revitalization Strategy Special Project(Yuecai[2021]No.37),the Special Fund for Rural Revitalization Strategy of Guangdong Province(Improvement of Agricultural Technology Capabilities)(No.2023TS-2-3,2023TS-2-5),the Guangzhou Science and Technology Project(No.202201010479),Guangdong Provincial Basic and Applied Basic Research Fund(No.2022A1515110473). （2022A1515110473）
