贵州万山汞矿区土壤地球化学特征

The Soil Geochemical Characteristics of Mercury Mining Area in Wanshan of Guizhou Province

贵州万山是全国重要的汞矿产区。本文较系统的分析了区内汞矿石、容矿岩石和表层土壤的元素地球化学特征,并进行了表层土壤元素质量分级。结果表明:(1)与容矿岩石相比,汞矿石表现出高Cu、Hg、Pb,低Al、Ca、Mg、V、F、Ni、Cd的特点。(2)与全国土壤背景值相比,表层土壤表现出高Mg、Fe、B、Mn、Zn、Cu、V、As、Hg、Pb、Ni、Cd,低Al、Ca的特点。(3)元素Hg为超三级、元素As为三级,其它元素环境质量分级为一级或二级。

Wanshan county of guizhou province is an important national mercury mineral area. In this paper, the elemental geochemical characteristics of mercury ore, host rock and surface soil in the area are systematically analyzed,and the quality classification of surface soil elements.The results showed that ：（1） Compared with the host rock, mercury ores show high Cu, Hg, Pb, low A1, Ca, Mg, V, F, Ni, Cd characteristics. （2） Compared with the national soil background values, the surface soil showed high Mg, Fe, B, Mn, Cu, V, As, Zn, Hg, Pb, Ni, Cd, low AI, Ca characteristics.（3） The element Hg is over three, the element As is grade three, and the environmental quality of other elements is classified as grade 1 or grade two.