Atmospheric Emission Inventory of Hazardous Trace Elements from China鈥檚 Coal-Fired Power Plants鈥擳emporal Trends and Spatial Variation Characteristics

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• 作者：Hezhong Tian ; Kaiyun Liu ; Junrui Zhou ; Long Lu ; Jiming Hao ; Peipei Qiu ; Jiajia Gao ; Chuanyong Zhu ; Kun Wang ; Shenbing Hua
• 刊名：Environmental Science & Technology
• 出版年：2014
• 出版时间：March 18, 2014
• 年：2014
• 卷：48
• 期：6
• 页码：3575-3582
• 全文大小：294K
• 年卷期：v.48,no.6(March 18, 2014)
• ISSN：1520-5851

文摘

Coal-fired power plants are the important sources of anthropogenic atmospheric releases of various hazardous trace elements (HTE) because a large quantity of emissions can cause wide dispersion and possible long-distance transportation. To obtain the temporal trends and spatial variation characteristics of various HTE discharged from coal-fired power plants of China, a multiple-year comprehensive emission inventory of HTE including Hg, As, Se, Pb, Cd, Cr, Ni, and Sb has been established for the period 2000鈥?010. Thanks to the cobenefit removal effects of conventional particulate matter/sulfur dioxide/nitrogen oxides (PM/SO₂/NO_x) control devices, emissions of these 8 toxic elements have shown a gradual decline since the peak in 2006. The total emissions of Hg, As, Se, Pb, Cd, Cr, Ni, and Sb are substantial and are estimated at about 118.54, 335.45, 459.4, 705.45, 13.34, 505.03, 446.42, and 82.33 tons (t), respectively, in 2010. Shandong, Jiangsu, Shanxi, and Hebei always rank among the top ten provinces with the highest emissions. Further, future emissions for 2015 and 2020 are projected with scenario analysis. Advanced technologies and integrated management strategies to control HTE are in great need.