矿山酸性水中硫的化学状态分析

Chemical State Analysis of Sulfur in Acid Water Generated from Weathered Wastestone

中文关键词:  双晶X-射线荧光光谱  铜矿废石  黄铁矿  硫化学状态

英文关键词:Double crystal X-ray fluorescence spctra  wastestone  pyritic  chemical state  sulfur

中文摘要:

      本文主要讨论用双晶高分辨X-射线荧光光谱法和SULS程序解析硫的化学状态,并用本方法初步研究了德兴铜矿黄铁矿型废石风化产生的酸性水中硫的化学状态。用人工试样测定并解析表明,其分析相对误差对于S^2-和S⁰小于6%,对于S⁴⁺和S⁶⁺小于16%.德兴铜矿酸性水刚露出地表时,水中的硫主要以四价形式存在,在露出地表与空气接触后,四价的硫很快被空气中氧氧化成六价。

英文摘要:

      This paper deals with cherubal stole of sulfur in add Whier generated form weathered wastestone of Dexing Copper Mine.The spectral distribution was scanned by double crystal X-ray fluoescence spcetrometer and analysed by SULS program which was set up on the beds of the principle of nonlinear least sqiare. According to the analytical results of the samples of known sulfur speciation, the relative error was less than 6% for S^2- and S⁰, and less than 16% for S⁴⁺ and S⁶⁺. This result is comparable with that obtained by infrared and chemical methods,the relatively analytical error of which was less than 15%.On the basis of tile analytical results it is considered that there were two speciess of sulfur in the acid water generated from the weathered wastestone of Dexing Copper Mine. The concentration of tetravalent sulfur in the acid water which was just flown off the wastestone dump was amounted to 72% of total silfur.