| Mercury in coal from the People＇s Republic of China |
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| 作者姓名： | Harvey E. Belkin Susan J. Tewalt Robert B. Finkelman Baoshan ZHENG Daishe WU Shehong LI Jianming ZHU Binbin WANG |
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| 作者单位： | [1]U.S. Geological Survey, Reston, VA, USA [2]Department of Geosciences, University of Texas at Dallas, Richardson, TX, USA [3]State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China |
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| 摘 要： | The Peoples＇ Republic of China produces and consumes the largest quantity of coal in the world; about 2.19 billion tons of coal were produced in 2005. It is estimated that coal consumption will reach 7 billion tons by 2020. Although the nationwide percentage of electrical production from coal is falling due to increased coal-fired power generation efficiency and alternative sources, China will bum more coal than any other country for the foreseeable future. China also is estimated to be the largest producer of Hg emissions （Dastoor and Larocque, 2004, Atmos. Envirn. 38：147-161）. A recent comprehensive study of anthropogenic Hg emissions in China （Streets et al., 2005, Atmos. Envirn. 39：7789-7806） produced a figure of 536 tons of Hg for the year 1999 with coal combustion （all types） accounting for 38% of the total. Atmospheric Hg emission is an international problem as the upper atmosphere provides effective global transport of mercury. Although the estimates vary, China produces about three times more Hg/t of coal burnt than the USA because of the lack of modem technology for pollution control and limited use of cleaned coal. Knowledge of the mercury content, mode of occurrence, and regional distribution in Chinese coal is vital in order to assess the global atmospheric contribution from Chinese coal combustion.
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| 关 键 词： | 煤 水银 环境保护 环境污染 地球化学 中国 燃烧状态 |
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