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Distribution of Arsenic in Colal and Its Residues

ZHANG Jianping 1) WANG Yunquan 2) ZHANG Ruguo 2) MUO Jieyun 2) REN Deyi 3) ( 1)Guangzhou Environmental Monitoring Station,Guangzhou 510030; 2)Department of Geography,Guangzhou Normal University,Guangzhou 510400; 3)Beiji  
The distribution of arsenic in main coal accumulating regions of China have been investigated at first.The average of arsenic in Chinese coals are higher than the world average,but less than American coals;less or close to that in Chinese soil.Arsenic has been obviously enriched in coal on the basis of arsenic clarke.Compared with one another among the different coal bearing areas,concentration and enrichment factor ( EF ) of arsenic is highest for Mesozoic and Cenozoic coals,next for South China Permian coals,lowest for North China Permo Carboniferous coals.Then,study on the distribution of arsenic in coal burnt products has shown that arsenic is dispersed in bottom ash,but enriched in fly ash,particularly on the surface of small fly ash grains.According to the calculation of mass balance rate,arsenic escaping into atmosphere in volatile is little and most can be intercepted in fly ash.
【Fund】: 国家自然科学基金 广州市自然科学基金
【CateGory Index】: X511,TQ534.9
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