Abstract：
Regulatory agencies worldwide set pesticide environmental quality standards, which are proposed independently in each dependent environmental media rather than across the complete fate route. Thus, lacking the fate-pathway perspective in defining pesticide environmental quality standards might cause undesirable pesticide residue from the upper compartment (e.g., soil) to the lower compartment (e.g., water). This study aimed to harmonize the self-consistency of pesticide environmental quality standards across environmental media via the fate-pathway analysis. The introduced qualitative and quantitative rules defined environmental quality standards of pesticides in six major environmental scenarios in the soil and water system based on related regulatory objectives. Fate factors simulated via USEtox were used to create a preliminary quantitative link between theoretical maximum legal masses of pesticides across environmental compartments. Using chlorpyrifos and 2,4-D as examples, their standard values were comparatively assessed in selected environmental media in China and the United States. According to the investigative findings, missing the respective environmental quality standards of pesticides in the agricultural soil could significantly influence the implementation of those in freshwater. Taking a fate-pathway perspective, the self-consistency test highlighted that defining pesticide environmental quality standards for freshwater was the most challenging task, as the freshwater compartment typically comprises multiple lower environmental compartments with diverse regulatory objectives. Overall, this theoretical study has the potential to illuminate the harmonization of pesticide environmental quality standards throughout the entire environmental fate pathway, ultimately leading to improved regulatory efficiency and communication. Future research should focus on risk-based model implementation, regulatory response evaluation, and legal limit interpretation to better integrate environmental pesticide management under a variety of regulatory goals.
摘要：
全球监管机构制定农药环境质量标准，它们是在每个依赖的环境媒体中独立提出的，而不是在完整的命运路线中提出的。因此，在定义农药环境质量标准时缺乏归宿途径的观点可能会导致上隔室中不受欢迎的农药残留(例如，土壤)到下部隔间(例如，水）。本研究旨在通过命运途径分析来协调环境介质中农药环境质量标准的自洽。引入的定性和定量规则根据相关监管目标，在土壤和水系统的六个主要环境情景中定义了农药的环境质量标准。通过USEtox模拟的命运因素用于在环境区隔中农药的理论最大合法质量之间建立初步的定量联系。以毒死蜱和2,4-D为例，他们的标准值在中国和美国的选定环境媒体中进行了比较评估。根据调查结果,缺少农业土壤中农药的环境质量标准可能会严重影响淡水农药的实施。从命运路径的角度来看，自我一致性测试强调，定义淡水农药环境质量标准是最具挑战性的任务，因为淡水隔间通常包括多个较低的环境隔间，具有不同的监管目标。总的来说,这一理论研究有可能阐明农药环境质量标准在整个环境归宿过程中的协调，最终导致监管效率和沟通的提高。未来的研究应该集中在基于风险的模型实施上，监管响应评估，和法律限制解释，以更好地整合各种监管目标下的环境农药管理。
