Exploring the dynamic behaviors of five pesticides in lettuce: Implications for consumer health through field and modeling experiments

文献类型： 外文期刊

第一作者： Wang, Yanhua

作者： Wang, Yanhua;Liu, Panpan;Shu, Fang;Chen, Chen;Yang, Guiling

作者机构：

关键词： Plant protection products; Lettuce; dynamiCROP model; Dissipation; Health risk assessment; Food safety

期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）

ISSN： 0308-8146

年卷期： 2024 年 452 卷

页码：

收录情况： SCI

摘要： Lettuce, a globally consumed nutritious vegetable, is often linked to concerns regarding pesticide residues. To address this issue, we conducted field trials and utilized dynamiCROP modeling to examine the uptake, distribution, translocation, and dissipation of five pesticides (lambda-cyhalothrin, difenoconazole, acetamiprid, dimethomorph, and beta-cypermethrin) commonly detected in lettuce. At harvest, pesticides residues were below the maximum residue limits (MRLs) at 0.05, 0.39, 0.047, 0.72, and 0.072 mg kg- 1, respectively. Simulation results elucidated distinct behaviors of the pesticides following application to lettuce foliage across various compartments. However, all pesticides exhibited a common dissipation trend, initially stabilizing or increasing before gradually declining. For all five pesticides, the largest contribution of residues on lettuce leaves came from the leaf surface during the early period after application, and from the soil in the long term. Health risk assessments indicated negligible risks associated with consuming lettuce containing these pesticides, both in the short and long term.

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