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Dissipation and dietary risk assessment of carbendazim and epoxiconazole in citrus fruits in China

文献类型： 外文期刊

作者： Zhang, Ying 1 ; Zhou, Yong 1 ; Duan, Tingting 2 ; Kaium, Abdul 4 ; Li, Xiaogang 1 ;

作者机构： 1.Hunan Agr Univ, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Coll Plant Protect, 1 Nongda Rd, Changsha 410128, Peoples R China

2.Guizhou Acad Agr Sci, Inst Plant Protect, Guiyang, Peoples R China

3.Hunan Acad Agr Sci, Inst Biotechnol, Changsha, Peoples R China

4.Sher E Bangla Agr Univ, Dept Agr Chem, Dhaka, Bangladesh

关键词： citrus; carbendazim and epoxiconazole; digestion dynamics; risk assessment

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.639； 五年影响因子：3.803 ）

ISSN： 0022-5142

年卷期：

页码：

收录情况： SCI

摘要： BACKGROUND Carbendazim and epoxiconazole are widely applied to control anthracnose and sand bark fungal diseases in citrus. The residues of these two fungicides in citrus and their potential risk to consumers have generated much public concern. We therefore sought to investigate the dissipation, residue, and dietary risk assessment of carbendazim and epoxiconazole in citrus. RESULTS The dissipation kinetics and residue levels of carbendazim and epoxiconazole in citrus under field conditions were measured using dispersive solid-phase extraction and ultra-high-performance liquid chromatography-tandem mass spectrometry. The citrus samples were extracted with acetonitrile and purified by primary secondary amine sorbent. The mean recoveries of carbendazim and epoxiconazole ranged from 86.2 to 105.6% and relative standard deviations were <= 9.8%. The half-lives of carbendazim and epoxiconazole in whole citrus ranged from 2.0 to 18.0 days. Hazard quotient (HQ) and risk quotient (RQ) models were applied to whole citrus for dietary exposure risk assessment based on the terminal residue test. Hazard quotients ranged from 0.066 to 0.134% and RQs from 18.48 to 82.12%. CONCLUSION Carbendazim and epoxiconazole in citrus degraded rapidly following first-order kinetics models. The dietary risk of exposure to both carbendazim and epoxiconazole through citrus, based on HQ and RQ, was acceptable for human consumption. This study indicates scientifically validated maximum residue limits in citrus, which are currently lacking for epoxiconazole in China. (c) 2021 Society of Chemical Industry

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