The European Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulation requires that quantitative environmental risk assessment is carried out for hazardous substances used as coformulants in plant protection products (PPPs), if registered above 10 t/y. The European Crop Protection Association (ECPA) has developed generic exposure scenarios and specific environmental release categories (SpERCs) to support these risk assessments. The SpERCs offer refinements to the default release factors defined in environmental release categories (ERCs) and are intended to be used with nested multimedia mass balance models as part of the assessment of regional predicted environmental concentrations. Based on the application method of PPPs, 2 scenarios were defined for which SpERCs were developed: 1) spraying of PPPs and 2) direct application of granular products or treated seeds to soil. The SpERC for spray applications includes release factors to air and soil that depend on the vapor pressure of the coformulant. Calculations are presented to support the subSpERCs describing the transition from nonvolatile to volatile behavior. The most recent version of the spray application SpERC defines a release factor for surface water and more conservative release factors to soil compared with previous versions. Use of the ECPA SpERCs allows the coformulant emissions from PPPs to be fully accounted for in the regional‐scale environmental risk assessment for a given substance, along with all other sources of emissions. Qualitative and quantitative justification for the ECPA‐derived SpERCs is presented and serves as the background documentation to the online European Chemicals Agency (ECHA) SpERC factsheets. The approach developed here whereby regional‐scale SpERCs are used in combination with a customized local‐scale exposure model is potentially applicable for other sectors that are required to conduct exposure assessments outside the scope of the standard environmental REACH models. Integr Environ Assess Manag 2020;16:472–480. © 2020 Syngenta Crop Protection AG. Integrated Environmental Assessment and Management published by Wiley Periodicals, Inc. on behalf of Society of Environmental Toxicology & Chemistry (SETAC)

中文翻译：

---

针对植物保护产品应用的REACH特定环境释放类别。

欧洲化学品注册，评估，授权和限制（REACH）法规要求，如果注册的年产量超过10吨/年，则必须对用作植物保护产品（PPP）中辅助制剂的有害物质进行定量的环境风险评估。欧洲作物保护协会（ECPA）已开发了通用的暴露情景和特定的环境释放类别（SpERC）以支持这些风险评估。SpERC对环境释放类别（ERC）中定义的默认释放因子进行了改进，旨在与嵌套多媒体质量平衡模型一起使用，作为评估区域预测环境浓度的一部分。根据PPP的应用方法，定义了为SpERC开发的2种方案：1）喷洒PPPs和2）将粒状产品或经过处理的种子直接施用到土壤上。喷涂应用的SpERC包括对空气和土壤的释放因子，该释放因子取决于助剂的蒸气压。提出了支持subSpERC的计算，该描述描述了从非易失性行为到易失性行为的过渡。与以前的版本相比，最新版本的喷涂应用SpERC定义了地表水的释放因子，并且更保守地释放到土壤。通过使用ECPA SpERC，可以在给定物质以及所有其他排放源的区域规模环境风险评估中充分考虑PPP产生的协同制剂排放。介绍了ECPA衍生的SpERC的定性和定量依据，并作为在线欧洲化学品管理局（ECHA）SpERC情况说明书的背景文件。此处开发的方法将区域规模的SpERC与定制的局部规模暴露模型结合使用，可能适用于在标准环境REACH模型范围之外进行暴露评估的其他部门。Integr环境评估管理2020； 16：472-480。©2020先正达作物保护公司。Wiley Periodicals，Inc.代表环境毒理化学协会（SETAC）出版的《综合环境评估与管理》