Department of Air Pollution Control, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing 100054, China; Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
Department of Air Pollution Control, Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing 100054, China.
Chemosphere. 2022 Sep;303(Pt 1):134759. doi: 10.1016/j.chemosphere.2022.134759. Epub 2022 Apr 28.
The emission of condensable particulate matter (CPM) and its environmental impacts are arousing concern in China with the effective control of filter particulate matter (FPM). This study established an up-to-date and unit-based CPM emission inventory for industrial sectors and systematically evaluated the effects of CPM on primary and secondary PM in China. In 2020, the national CPM emissions total for industrial sectors was estimated to be 0.98 Tg with uncertainty from -49% to 66%, including 0.62 Tg of organic CPM (CPM) and 0.36 Tg of inorganic CPM (CPM). Totals of 62%, 23% and 8% CPM were emitted from coal-fired power plants, coal-fired industrial boilers and sinter plants, respectively. By filling CPM emissions in PM simulation, the normalized mean bias (NMB) of model to observation was improved from -27% to -14% in East, North and Central China. The 4 μg/m PM concentration was attributed to CPM emissions in this region, accounting for 10% of observations. On "polluted" days (PM>75 μg/m), industrial CPM emissions can contribute 7 μg/m PM in North China. Therefore, China should focus on controlling CPM from coal combustion to ensure continuous air quality improvement.
随着可过滤颗粒物（PM）的有效控制，中国对凝聚性颗粒物（CPM）的排放及其环境影响愈发关注。本研究建立了一个最新的、基于单元的工业部门 CPM 排放清单，并系统评估了 CPM 对中国一次和二次 PM 的影响。2020 年，工业部门全国 CPM 排放量估计为 0.98 太克，不确定性为-49%至 66%，其中包括 0.62 太克有机 CPM（CPM）和 0.36 太克无机 CPM（CPM）。CPM 分别有 62%、23%和 8%来自燃煤电厂、燃煤工业锅炉和烧结厂。通过在 PM 模拟中填入 CPM 排放，模型对观测的归一化平均偏差（NMB）从中国东部、北部和中部的-27%提高到-14%。该地区 4μg/m³的 PM 浓度归因于 CPM 排放，占观测值的 10%。在“污染”日（PM>75μg/m³），华北地区工业 CPM 排放可使 PM 增加 7μg/m³。因此，中国应重点控制煤燃烧产生的 CPM，以确保空气质量的持续改善。
