Quantitative tracing of typical herbicides and their metabolites in sorghum agrosystems for fate tendency and cumulative risk
文献类型： 外文期刊
作者： Li, Tong 1 ; Wu, Xujin 3 ; Zheng, Lufei 4 ; Cheng, Youpu 2 ; Zhao, Lilin 1 ; Chen, Zenglong 1 ;
作者机构： 1.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects &, Beijing 100101, Peoples R China
2.Tianjin Agr Univ, Tianjin 300384, Peoples R China
3.Henan Acad Agr Sci, Inst Qual & Safety Agroprod, Zhengzhou 450002, Peoples R China
4.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China
关键词： UHPLC-MS/MS; Herbicides; Metabolites; Combined exposure; Risk assessment
期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）
ISSN： 0308-8146
年卷期： 2025 年 464 卷
页码：
收录情况： SCI
摘要： Elucidating the combined exposure of agrochemicals is essential for safeguarding human health and agroecosystem safety. A rapid and high-sensitivity UHPLC-MS/MS method was developed for simultaneous quantification of nine compounds in sorghum by an assembly-line optimization process with a limit of quantitation of 0.001 mg/kg. The concentration variation of atrazine, quinclorac, fluroxypyr-meptyl and metabolites was reflected by terminal magnitudes of <= 0.0665 mg/kg. Additionally, atrazine was dealkylated to deethyl atrazine and desethyl desisopropyl atrazine at concentrations of 0.0014-0.0058 mg/kg during the sorghum harvest. Acceptable health hazardous of atrazine and quinclorac for all life cycle populations were comparatively assessed via deterministic and probabilistic models, in which atrazine gained an 83.55 % share of cumulative dietary risks. Rural residents had significantly higher risks than urban residents, and children were the most sensitive group. Despite the low health risks, combined exposure to herbicides and their metabolites should be continuously stressed, given their cumulative amplification effects.
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