贵州晴隆老万场红土型金矿三种藓类植物及其土壤基质的重金属元素测定及相关性分析

利用原子吸收光谱仪对晴隆老万场红土型金矿三种苔藓植物体及其土壤中Au、Ca、Mg、Cu、Pb、Tl、Zn、Hg八种金属元素进行测定,并对植物体与元素之间的相关性及植物对金属的富集能力进行分析。结果表明:在该金矿区生长的苔藓体内金属元素普遍比较高,其体内金属元素含量的顺序与土壤中的金属元素的顺序基本一致。不同物种植物体对金属元素的吸收、富集却有较大的差异。Mg-Hg在0.01水平上达到极显著正相关,Au-Zn、Tl-Cu在0.05水平上达到显著正相关。皱叶毛口藓和芽孢银藓对Au具有较强的富集能力,因此,它们在该地区对红土型金矿具有一定的指示作用。

Mensuration and correlating analyse of heavy metal elements in three mosses and soil from Lao Wanchang Lateritic Gold Deposit in Qinglong,Guizhou

The contents of eight elements including Au,Ca,Mg,Cu,Pb,Tl,Zn and Hg of three mosses and soil in Lao Wanchang Gold Deposit in Qinglong,Guizhou Province,were analysed by means of applying the Atomic Absorption Spectrometry.And the relativity between plants and elements as well as the enrichment ability of mosses to elements were analysed.The results showed:the elements content in plants in gold field are higher than nonmetal field,the sequence of element content in plants is consistent completely with gold field;but there are distinction among bryophytes to absorb and enrich elements;Mg-Hg showed significantly coefficient at 0.01 level,Au-Zn,Tl-Cu showed coefficient at 0.05 level.Anombryum gemmigerum Broth.and Trichostomum cripulum Bruch A.Muell have strong enrichment ability to Au element.Hence we thought that the two mosses plants have the indicative function to lateritic gold deposit in the area.