Updated Emission Inventories for Speciated Atmospheric Mercury from Anthropogenic Sources in China
Updated Emission Inventories for Speciated Atmospheric Mercury from Anthropogenic Sources in China
复制标题
中国人为源大气汞排放清单更新
DOI：
10.1021/es504840m
复制
发表时间：
2015-03-03
影响因子：
11.4
通讯作者：
Liu, Xiang
中科院分区：
文献类型：
--
作者：
Zhang, Lei;Wang, Shuxiao;Liu, Xiang
中国是全球大气汞（Hg）的最大排放国，需要在中国建立准确的排放清单，以缩小全球汞质量平衡估算中的巨大差距，并评估汞对各种生态系统的影响。本研究利用大量现场测量和文献资料生成的概率排放因子，建立了中国大气汞排放（come）模型。利用该模型，估计人为汞排放总量从2000年的356 t持续增加到2010年的538 t，平均年增长率为4.2%。工业燃煤、燃煤电厂、有色金属冶炼和水泥生产是中国主要的汞排放源。2010年，排放量最大的10个省份占汞排放总量的近60%。在中国建立了特定的汞排放清单，网格分辨率为36 x 36 km，为汞运输模型提供了所需的排放场。在这个新的清单中，基于最新的野外测量数据和更详细的技术分类，部门汞形态剖面得到了显着改善。新开发库存的总体不确定性估计在-20%到+23%之间。
China is the largest contributor to global atmospheric mercury (Hg), and accurate emission inventories in China are needed to reduce large gaps existing in global Hg mass balance estimates and assess Hg effects on various ecosystems. The China Atmospheric Mercury Emission (CAME) model was developed in this study using probabilistic emission factors generated from abundant on-site measurements and literature data. Using this model, total anthropogenic Hg emissions were estimated to be continuously increasing from 356 t in 2000 to 538 t in 2010 with an average annual increase rate of 4.2%. Industrial coal combustion, coal-fired power plants, nonferrous metal smelting, and cement production were identified to be the dominant Hg emission sources in China. The ten largest contributing provinces accounted for nearly 60% of the total Hg emissions in 2010. Speciated Hg emission inventory was developed over China with a grid-resolution of 36 x 36 km, providing needed emission fields for Hg transport models. In this new inventory, the sectoral Hg speciation profiles were significantly improved based on the latest data from field measurements and more detailed technology categorization. The overall uncertainties of the newly developed inventory were estimated to be in the range of -20% to +23%.