Deposition, dissipation, metabolism and honey bee exposure risk of thiacloprid in greenhouse scenario

文献类型： 外文期刊

第一作者： Pan, Shaodong

作者： Pan, Shaodong;Shan, Yongpan;Song, Xianpeng;Wang, Dan;Ma, Yajie;Hu, Hongyan;Ren, Xiangliang;Ma, Yan;Wu, Changcai;Ren, Xiangliang;Ma, Yan;Wu, Changcai;Pan, Shaodong;Sun, Yuweng;Pan, Shaodong

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关键词： Thiacloprid; Distribution; Dissipation; Metabolism; 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 475 卷

页码：

收录情况： SCI

摘要： The degradation and non-target risks of neonicotinoids under greenhouse scenarios remain poorly understood. Thiacloprid' deposition, dissipation, metabolism and honey bee exposure risk on greenhouse-grown cowpea, cucumber and melon were analyzed using a rapid detection method for thiacloprid and five metabolites. The initial concentration ratios and half-lives in plant tissues were highest in leaves (67.8 % and 3.13 days), followed by flowers (19.8 % and 1.17 days), stems (9.2 % and 2.07 days) and fruits (3.1 % and 2.40 days). Except for flower part, cowpea exhibited the most robust initial deposition values-1.40, 13.54, and 1.06 mg kg(-1) (stem, leaf, fruit)-outstripping other crops corresponding tissues by a staggering 1.18-15.20 times. In the 12-24 h following application, a surge in thiacloprid content within the fruits of cowpea, cucumber, and muskmelon was observed, escalating by 31.6 % (0.33 mg kg(-1)), 46.0 % (0.13 mg kg(-1)), and 105.4 % (0.07 mg kg(-1)), respectively. In addition to M31, four thiacloprid metabolites were identified, with peak concentrations occurring in 1-7 days. Metabolite concentration ratios were highest in fruits (33.9 %), followed by leaves (26.9 %), stems (24.3 %), and flowers (14.9 %). 20.3 % of the time and space sampling was higher than the exposure risk concern value (HQ > 50), and 46.43 % was higher than the oral risk concern value (HQ > 50). Leaves and flowers were identified as high-risk tissues, requiring 2-20 days to reach low-risk levels for pollinator exposure. The research provides insights into the environmental behavior of neonicotinoids and the associated risks to pollinating bees in greenhouse scenarios.

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