Wang Dingyong, He Lei, Wei Shiqiang, Feng Xinbin
State Key Lab of Environmental Geochemistry, Institute of Geochemistry, CA, Guiyang 550001, PR China.
Sci Total Environ. 2006 Aug 1;366(2-3):722-8. doi: 10.1016/j.scitotenv.2005.09.054. Epub 2005 Oct 10.
This investigation presents a first assessment of the contribution to the regional mercury budget from anthropogenic and natural sources in Chongqing, an important industrial region in southwest China. The emissions of mercury to atmosphere from anthropogenic sources in the region were estimated through indirect approaches, i.e. using commonly acceptable emission factors method, which based on annual process throughputs or consumption for these sources. The natural mercury emissions were estimated from selected natural sources by the dynamic flux chamber technique. The results indicated that the anthropogenic mercury emissions totaled approximately 8.85 tons (t), more than 50% of this total originated in coal combustion and 23.7% of this total emission in the industrial process (include cement production, metal smelting and chemical industry). The natural emissions represented approximately 17% of total emissions (1.78 t yr(-1)). The total mercury emission to atmosphere in Chongqing in 2001 was 10.63 t.
本调查首次评估了中国西南部重要工业地区重庆的人为源和自然源对区域汞收支的贡献。该地区人为源向大气的汞排放通过间接方法估算，即使用普遍认可的排放因子法，该方法基于这些源的年度生产过程产量或消耗量。自然汞排放通过动态通量箱技术从选定的自然源进行估算。结果表明，人为汞排放总量约为8.85吨（t），其中超过50%源自煤炭燃烧，23.7%源自工业过程（包括水泥生产、金属冶炼和化学工业）。自然排放约占总排放量的17%（1.78 t·yr⁻¹）。2001年重庆向大气的汞排放总量为10.63 t。
