渭北石炭二叠系煤中汞的含量及分布特征

MERCURY CONTENT AND ITS DISTRIBUTION IN PERMO-CARBONIFEROUS COAL IN WEIBEI AREA,SHAANXI

摘要: 采用原子荧光和化学分析方法,研究了渭北部分矿区石炭二叠系煤中汞的含量及汞在煤中的分布特征。结果表明,渭北石炭二叠系煤中汞含量较高,高于地壳中汞的平均含量(0.08×10^-6)及已经报导的煤和石油中汞的含量(0.001×10^-6~0.03×10^-6)。煤中汞主要以HgS的形式存在,与煤中无机硫成正比关系。同时论述了煤中汞含量与灰分等的关系。

Abstract: The mercury content and its distribution pattern of the Permo-Carboniferous coal in some Weibei coal fields were analyzad using atomic fluorimetry and chemical analysis.The results show that the mercury content in coal in these areas is higher than the average content in the crust(0.08×10^-6) and the known mercury content in other coal and oil(0.001×10^-6~0.03×10^-6).The mercury in coal presents itself mainly as HgS,which is proportional to the inorganic sulfur content.The relationship between mercury and ash content in coal is demonstrated.