Scientists and decision makers need accurate, accessible and fast tools to assess and prioritize the persistence (POV) and environmental long-range transport potential (LRTP) of chemicals. Here we evaluated the Organisation for Economic Co-operation and Development (OECD) POV and LRTP Screening Tool ("the Tool") with respect to the POV and LRTP estimates that the Tool provides for organophosphate esters (OPEs). We found that the use of default parameter values could significantly underestimate POV and LRTP values of OPEs and, potentially, other Persistent Mobile Organic Compounds (PMOCs), by not accounting for episodic atmospheric transport and poleward river-based transport in the northern hemisphere. Specifically, sensitivity and Monte Carlo uncertainty analyses indicate that non-chlorinated OPEs could be subject to LRTP when uncertainties in gas-particle partitioning and its implications for atmospheric degradation are considered, and chlorinated OPEs when river-based transport is considered. Further, the analyses showed strong dependence of results on the accuracy of the environmental half-lives used as input parameters. We suggest that the Tool could be modified to include an optional "Arctic (PMOC) LRTP setting" that incorporates episodic atmospheric and river-based transport as well as decreased environmental half-lives due to cold temperatures.

中文翻译：

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对经合组织POV和LRTP筛选工具的评估，以估计有机磷酸酯的远距离迁移。

科学家和决策者需要准确，可访问且快速的工具，以评估化学品的持久性（POV）和环境远距离迁移潜力（LRTP）并确定其优先级。在这里，我们针对该工具提供的有机磷酸酯（OPEs）的POV和LRTP估计，评估了经济合作与发展组织（OECD）的POV和LRTP筛选工具（“工具”）。我们发现，默认参数值的使用可能会大大低估OPE的POV和LRTP值，甚至可能低估其他持久性移动有机化合物（PMOC）的POV和LRTP值。具体来说，敏感性和蒙特卡洛不确定性分析表明，当考虑到气体颗粒分配的不确定性及其对大气退化的影响时，未氯化的OPE可能会受到LRTP的影响，而考虑到基于河流的运输时，氯化的OPE可能会受到LRTP的影响。此外，分析表明结果强烈依赖于用作输入参数的环境半衰期的准确性。我们建议可以对该工具进行修改，使其包括可选的“北极（PMOC）LRTP设置”，该设置结合了突发性的大气和河流运输，以及由于低温导致的环境半衰期缩短。分析表明结果强烈依赖于用作输入参数的环境半衰期的准确性。我们建议可以对该工具进行修改，使其包含可选的“北极（PMOC）LRTP设置”，该设置结合了间歇性的大气和河流运输，以及由于低温导致的环境半衰期缩短。分析表明结果强烈依赖于用作输入参数的环境半衰期的准确性。我们建议可以对该工具进行修改，使其包含可选的“北极（PMOC）LRTP设置”，该设置结合了间歇性的大气和河流运输，以及由于低温导致的环境半衰期缩短。