School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Tsinghua University, Beijing 100084, China.
School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Tsinghua University, Beijing 100084, China; MTM Research Centre, School of Science and Technology, Örebro University, SE-701 82 Örebro, Sweden.
Sci Total Environ. 2017 Dec 15;605-606:498-506. doi: 10.1016/j.scitotenv.2017.05.068. Epub 2017 Jun 30.
One of the major goals of the Stockholm Convention on Persistent Organic Pollutants is to continuously reduce the releases of unintentional persistent organic pollutants (POPs) such as polychlorinated dibenzo-para-dioxins and dibenzofurans (PCDD/PCDF) or polychlorinated biphenyls (PCB) from anthropogenic sources. Until now, most efforts have focused on the releases of PCDD/PCDF and to a lesser extent on unintentionally generated PCB, and therefore, release inventories reported as toxic equivalents (TEQ) do not include the twelve dioxin-like PCB (dl-PCB). In order to facilitate the development of national release inventories for the total TEQ - consisting of PCDD, PCDF and PCB - this study collected and summarized published emission factors (EFs) of unintentional dl-PCB or calculated them from measured data for the sources listed in the UNEP Toolkit. In total, 286 EFs for dl-PCB were found (or could be calculated) whereby 233 described release to air, 23 EFs addressed to residue, 25 EFs to product; and only 5 EFs addressed releases to land. Taking into account performance criteria such as the facility type and scale or abatement technologies, the EFs were grouped and assigned to the source categories and/or classes used in the UNEP Toolkit. With these newly added data and EFs of dl-PCB, the already existing EFs in the Toolkit can be improved and amended. In addition, a statistically significant correlation between the EF of dl-PCB proposed in this study and EF of PCDD/PCDF recommended in the Toolkit was observed.
《关于持久性有机污染物的斯德哥尔摩公约》的主要目标之一是不断减少人为源排放的无意持久性有机污染物（POPs），如多氯二苯并对二恶英和呋喃（PCDD/PCDF）或多氯联苯（PCB）。到目前为止，大多数工作都集中在 PCDD/PCDF 的排放上，而在较小程度上则集中在无意产生的 PCB 上，因此，报告的排放量清单中的有毒等效物（TEQ）不包括十二种类似二恶英的 PCB（dl-PCB）。为了便于制定包括 PCDD、PCDF 和 PCB 在内的总 TEQ 的国家排放清单，本研究收集并总结了已发表的无意 dl-PCB 的排放因子（EF），或根据 UNEP 工具包中列出的源的实测数据进行计算。总共发现了 286 种 dl-PCB 的 EF（或可以计算），其中 233 种描述为空气释放，23 种为残留物释放，25 种为产品释放；仅有 5 种为土地释放。考虑到设施类型和规模或减排技术等绩效标准，EF 被分组并分配给 UNEP 工具包中使用的源类别和/或类别。有了这些新添加的数据和 dl-PCB 的 EF，工具包中已经存在的 EF 可以得到改进和修正。此外，本研究中提出的 dl-PCB 的 EF 与工具包中推荐的 PCDD/PCDF 的 EF 之间观察到了统计学上的显著相关性。
