The dissipation and risk assessment of 2,4-D sodium, a preharvest anti-fruit-drop plant hormone in bayberries

文献类型： 外文期刊

第一作者： Zhao, Huiyu

作者： Zhao, Huiyu;Yang, Guiling;Liang, Senmiao;Wang, Qiang;Zhang, Zhiheng;Wang, Wen;Song, Wen;Cai, Zheng;Zhao, Huiyu;Yang, Guiling;Wang, Qiang;Zhang, Zhiheng;Wang, Wen;Song, Wen;Cai, Zheng;Liang, Senmiao;Huang, Qianbin;Dai, Wanze

作者机构：

关键词： Bayberry;2;4-D sodium;Risk assessment;Dissipation;Anti-fruit-drop

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Preharvest fruit-drop is a challenge to bayberry production. 2,4-D sodium as a commonly used anti-fruit-drop hormone on bayberry can reduce the yield loss caused by preharvest fruit-drop. The persistence and risk assessment of 2,4-D sodium after applying on bayberries were investigated. A method for determining 2,4-D sodium in bayberry was established based on LC-MS-MS. The average recoveries of 2,4-D sodium were at the range of 93.7-95.8% with relative standard deviations (RSDs) ranging from 0.9 to 2.8%. The dissipation rates of 2,4-D sodium were described using firstorder kinetics, and its half-life ranged from 11.2 to 13.8 days. A bayberry consumption survey was carried out for Chinese adults for the first time. The safety assessments of 2,4-D sodium were conducted by using field trail data as well as monitoring data. Results showed that the chronic risk quotient and the acute risk quotient were calculated to be 0.23-0.59 and 0.02-0.05%, respectively, for Chinese adults, indicating low dietary risk for adults and children. In the end, the household cleaning steps were compared, and results showed that water rinsing for 1 min can remove 49.9% 2,4-D sodium residue, which provides pesticide removal suggestion for consumers.

分类号： X5`X

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