Institute of Environmental Systems Research, University Osnabruck, D-49069 Osnabruck, Germany.
Environ Sci Technol. 2009 Dec 15;43(24):9223-9. doi: 10.1021/es900773u.
Despite the fact that current-use pesticides (CUP) have different chemical properties to first-generation organochlorine products, the long-term and long-range environmental behavior of these chemicals is still unclear. Data for 45 active ingredients of CUPs were collected, most of which originate from the results of simulation tests submitted for authorization. According to the Stockholm Convention on persistent organic pollutants (POPs), two of the 45 CUPs exceed both screening level criteria for persistence and long-range transport potential (LRTP). Thirteen CUPs meet the persistence criterion and just one for LRTP. This classification is compared to the reference chemicals approach using overall persistence (P(ov)) and characteristic travel distance (CTD) calculated with a multimedia model. Although none of the 45 CUP have a CTD above the LRTP boundary line, three of them exceed the overall persistence criterion derived from legacy POPs for classification. Nineteen CUPs are transported over longer distances in water than in air. For such polar substances a LRTP boundary has yet to be defined. We recommend the multimedia model modeling approach to calculate P(ov) and LRTP as a second tier in persistence and LRTP assessment.
尽管当前使用的农药 (CUP) 具有与第一代有机氯产品不同的化学特性，但这些化学物质的长期和远距离环境行为仍不清楚。收集了 45 种 CUP 活性成分的数据，其中大部分源自为授权提交的模拟测试结果。根据《关于持久性有机污染物的斯德哥尔摩公约》（POPs），这 45 种 CUP 中有两种超过持久性和长距离迁移潜力 (LRTP) 的筛选水平标准。有 13 种 CUP 符合持久性标准，只有一种符合 LRTP 标准。这一分类与使用多媒体模型计算的总体持久性 (P(ov)) 和特征迁移距离 (CTD) 的参考化学品方法进行了比较。尽管这 45 种 CUP 中没有一种 CTD 超过 LRTP 界限，但其中三种超过了用于分类的持久性标准，该标准源自持久性有机污染物的传统 POPs。19 种 CUP 在水中的迁移距离比在空气中长。对于此类极性物质，LRTP 边界尚未确定。我们建议采用多媒体模型建模方法来计算持久性和 LRTP 评估的第二级别的 P(ov)和 LRTP。
