中文摘要：

基于对贵州兴仁某村煤中砷的含量及赋存状态的研究,得出研究区砷含量分布范围在17.83mg/kg～140.64mg/kg,平均值为93.31mg/kg,远高于中国（4.09mg/kg）和世界（5mg/kg）煤砷含量.其赋存状态复杂多样,煤砷各形态含量比例分布为：残渣态（56.74%）〉铁锰氧化物结合态（20.74%）〉硫化物结合态（15.20%）〉有机结合态（5.07%）〉碳酸盐结合态（1.73%）〉水溶态和可交换态（0.52%）.煤中砷主要以残渣态形式存在,铁锰氧化物结合态砷含量也较高.其中一个煤样砷含量相对于其他样品较小,有机砷结合态所占比例相对较大,结合前人研究推断：此次研究的煤样多以大分子有机砷结合态存在,但不易提取,导致残渣态砷含量较高.

英文摘要：

Investigation of arsenic content and occurrence in coal of Guizhou coal showed that arsenic content is large,and its arithmetic average content reaches 93.31 mg/kg,which is much larger than that in coal of other coal fields in China （4.09 mg/kg）.The sequence of the average levels of arsenic occurrence in coal is：residual arsenic（56.74%）Fe-Mn oxide arsenic （20.74%）sulfide arsenic （15.20%）organic arsenic （5.07%）carbonate arsenic （1.73%）soluble and exchangeable arsenic.Arsenic in coal is mainly residual arsenic,and Fe-Mn oxide arsenic is the second highest.There is a coal sample exception,whose content is lower than other samples relatively,and organ arsenic is the largest in all modes.With previous studies,the result can be inferred that the coal is mainly organic arsenic,but not easy to extract.