Degradation, adsorption, and bioaccumulation of novel triketone HPPD herbicide tembotrione
文献类型： 外文期刊
作者： Dong, Xu 1 ; Chen, Zihao 1 ; Chu, Yue 2 ; Tong, Zhou 2 ; Gao, Tongchun 2 ; Duan, Jinsheng 2 ; Wang, Minghua 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Plant Protect, Dept Pesticide Sci, 1 Weigang Rd, Nanjing 210095, Jiangsu, Peoples R China
2.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230031, Peoples R China
关键词： Tembotrione; Environmental fate; Toxicology; Degradation; Ecological safety
期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：5.8； 五年影响因子：5.4 ）
ISSN： 0944-1344
年卷期： 2023 年 30 卷 28 期
页码：
收录情况： SCI
摘要： Tembotrione is a new triketone HPPD herbicide widely used in Europe, USA, and other areas. However, tembotrione is moderately to highly toxic to algae and daphnia in aquatic ecosystems. In this study, hydrolysis, photolysis, soil degradation, soil adsorption, and bioaccumulation of tembotrione were systematically studied. Hydrolysis experiment revealed that tembotrione was stable in acidic, neutral, and alkaline conditions with half-lives of 231-289 days. The photolysis half-lives of tembotrione were 112-158 days and 76-107 days in pH 4, 7, 9 buffer solutions and on three soils surface, respectively, which demonstrated that tembotrione could be persisted in soil and water. Meanwhile, tembotrione K-foc was 128-196 mL/g, indicating that tembotrione was not easily adsorbed to soil, and the adsorption capacity increased with the decrease in pH. The half-lives of tembotrione in the test soil were 32-48 days, and high organic matter soil is conducive to microbial activity and accelerates the degradation of tembotrione. Moreover, bioaccumulation experiment demonstrated that tembotrione with a BCF of 0.664 to 0.724 had a low risk of exposure to zebrafish. This study is very helpful for the evaluation environmental risk and safe use of tembotrione.
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