煤中砷的分布、赋存形态及对环境的影响

The Distribution of Arsenic in Coal,its Forms of Occurrence and its Impact on the Environment

研究了煤中砷含量的分布规律、赋存形态及成因,简要分析了砷对环境的影响。结果表明,我国煤中砷含量算数平均值比美国、英国和世界平均水平都低,但比澳大利亚高。我国各省(直辖市)煤中砷含量各不相同,砷浓度在中国北方显著低于华南。我国不同成煤时代煤中砷的含量显著变化。不同煤种砷含量分布不均匀。砷的赋存形态主要是有机砷和无机砷。各种地质因素影响砷的富集,包括物源区母岩、成煤植物、成煤环境、煤化作用、构造运动等。

The authors of this paper have studied the distribution of arsenic in coal,its forms of occurrence and its impact on the environment.The results show that the average content of arsenic in coal in China is lower than that in the United States,Britain and the world average,but higher than that in the Australia.Even in China,the content of arsenic in coal varies in different provinces,and the concentration of arsenic in the north of China is significantly lower than that in South China.The content of arsenic in coal changed in different coal forming ages in China.The concentration of arsenic in different kinds of coal is not uniform.The forms of occurrence of arsenic are mainly organic and inorganic arsenic.Various geological factors affect the arsenic enrichment,including the mother rock of provenance,coal-forming plants,coal-forming environment,coalification and tectonic movement.