Residue regulation and dissipation pattern of five typical pesticides on spinach in cool climate region

文献类型： 外文期刊

第一作者： Song, Le

作者： Song, Le;Li, An;Yang, Xusheng;Yang, Zixi;Zhao, Yueyuan;Wei, Yufan;Liu, Jiahao;Liang, Gang;Pan, Canping

作者机构：

关键词： Cool open field; Spinach; Pesticide residue; Cumulative exposure; Dietary intake risk assessment

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.6； 五年影响因子：4.6 ）

ISSN： 0889-1575

年卷期： 2025 年 145 卷

页码：

收录情况： SCI

摘要： To elucidate the residue behavior, degradation dynamics, and cumulative dietary intake risk of typical pesticides on spinach in cool climate region, field experiments were carried out in Beijing, China. The study aimed to assess the compatibility of current pesticide registration labels with the unique climatic conditions of cool areas. The hazard index (HI) and point of departure index (PODI) were used to evaluate the cumulative dietary intake risk on spinach. Results indicated that the half-lives of imidacloprid, thiamethoxam, dimethomorph, acetamiprid, and pymetrozine on spinach ranged from 1.88 to 9.12 days, with final residue levels between 0.02 and 5.11 mg/kg. The long-term dietary risk quotients for these pesticides on spinach grown in open fields ranged from 8 % to 20 % of acceptable daily intake, while the short-term risk probabilities ranged from 3 % to 9 % of acute reference dose. The chronic cumulative HI and PODI values were 0.3540 and 0.3526, respectively, and the acute cumulative HI and PODI values were 0.1421 and 0.1406, respectively. The cumulative risk assessment of multi-pesticide residues on spinach in cool open-field indicated that the risks to human health were at acceptable level to human health.

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