Li Hongyu, Wang Zhanxiang, He Jian, Zhang Ning, Mao Xiaoxuan, Ma Jianmin, Gao Hong, Yang Zhaoli, Ma Haibo
Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, Key Laboratory of Western China's Environmental Systems Stems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China.
School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518000, PR China.
J Hazard Mater. 2023 Oct 5;459:132223. doi: 10.1016/j.jhazmat.2023.132223. Epub 2023 Aug 4.
Decabromodiphenyl ether (Deca-BDE) was officially listed in Annex A of the Stockholm Convention for persistent organic pollutants (POPs). It is necessary to establish its emission inventory to help reduce Deca-BDE contamination in the environment. We established a comprehensive Deca-BDE emission inventory in China. The results reveal that, from 2015 to 2017, the Deca-BDE emissions in its production source (source I) were less altered but increased annually in flame retarded plastics processing (source II), Deca-BDE-containing products usage (source III), and electronic waste (e-waste) treatment (source IV). We show that Deca-BDE emissions declined significantly in sources I and II but grew in source III and source IV from 2017 to 2018. We set up the provincial emission inventory to a gridded map on a spatial resolution of 0.25°× 0.25° latitude/longitude. The gridded inventory was incorporated into ChnMETOP model to simulate Deca-BDE concentrations in air and soil, and the modeled concentrations were compared to field-sampling data. The results show that the Deca-BDE emission inventory developed in this study agreed well with observed data, demonstrating that the Deca-BDE inventory in China developed in the present study is reliable. The inventory provides a support for quantifying human exposure risk to Deca-BDE and developing effective mitigation measures to mitigate Deca-BDE emissions.
十溴二苯醚（Deca-BDE）已被正式列入《关于持久性有机污染物的斯德哥尔摩公约》附件A。有必要建立其排放清单，以帮助减少环境中的十溴二苯醚污染。我们建立了中国十溴二苯醚综合排放清单。结果显示，2015年至2017年，其生产源（源I）的十溴二苯醚排放量变化较小，但在阻燃塑料加工（源II）、含十溴二苯醚产品使用（源III）和电子废物（电子垃圾）处理（源IV）中排放量逐年增加。我们发现，2017年至2018年，源I和源II的十溴二苯醚排放量显著下降，但源III和源IV的排放量有所增加。我们将省级排放清单设置为经纬度分辨率为0.25°×0.25°的网格地图。将该网格化清单纳入ChnMETOP模型，以模拟空气中和土壤中的十溴二苯醚浓度，并将模拟浓度与实地采样数据进行比较。结果表明，本研究中建立的十溴二苯醚排放清单与观测数据吻合良好，表明本研究中建立的中国十溴二苯醚清单是可靠的。该清单为量化人类对十溴二苯醚的暴露风险以及制定有效的减排措施以减少十溴二苯醚排放提供了支持。
