Klasmeier Jörg, Matthies Michael, Macleod Matthew, Fenner Kathrin, Scheringer Martin, Stroebe Maximilian, Le Gall Anne Christine, Mckone Thomas, Van De Meent Dik, Wania Frank
Institute of Environmental Systems Research, University of Osnabrück, D-49069 Osnabrück, Germany.
Environ Sci Technol. 2006 Jan 1;40(1):53-60. doi: 10.1021/es0512024.
We propose a multimedia model-based methodology to evaluate whether a chemical substance qualifies as POP-like based on overall persistence (Pov) and potential for long-range transport (LRTP). It relies upon screening chemicals against the Pov and LRTP characteristics of selected reference chemicals with well-established environmental fates. Results indicate that chemicals of high and low concern in terms of persistence and long-range transport can be consistently identified by eight contemporary multimedia models using the proposed methodology. Model results for three hypothetical chemicals illustrate that the model-based classification of chemicals according to Pov and LRTP is not always consistent with the single-media half-life approach proposed by the UNEP Stockholm Convention and thatthe models provide additional insight into the likely long-term hazards associated with chemicals in the environment. We suggest this model-based classification method be adopted as a complement to screening against defined half-life criteria at the initial stages of tiered assessments designed to identify POP-like chemicals and to prioritize further environmental fate studies for new and existing chemicals.
我们提出一种基于多媒体模型的方法，以根据总体持久性（Pov）和远距离迁移潜力（LRTP）来评估一种化学物质是否符合类持久性有机污染物的标准。该方法依靠将化学品与具有明确环境归宿的选定参考化学品的Pov和LRTP特征进行筛选对比。结果表明，使用所提出的方法，八种当代多媒体模型能够一致地识别出在持久性和远距离迁移方面关注度高和低的化学品。三种假设化学品的模型结果表明，根据Pov和LRTP对化学品进行基于模型的分类并不总是与联合国环境规划署《斯德哥尔摩公约》提出的单介质半衰期方法一致，并且这些模型为与环境中化学品相关的可能长期危害提供了更多见解。我们建议采用这种基于模型的分类方法，作为在旨在识别类持久性有机污染物的分层评估初始阶段针对确定的半衰期标准进行筛选的补充，并为新化学品和现有化学品的进一步环境归宿研究确定优先次序。
