【摘要】 为更好地了解矿山环境中元素迁移释放的地球化学过程,本文研究了赫章后河地表水系硫酸根和沉积物中的硫同位素组成。结果发现,水体和沉积物中硫同位素组成差异较大,不同水体中SO42-的浓度与δ34S值之间有较好的相关性,主河道水体和沉积物中的硫主要来自矿业活动的释放。水体中硫同位素组成不仅能反映水体的受污染情况和污染水体的扩散范围,还能反映沉积物中硫化物氧化作用的地球化学过程。更多还原

【Abstract】 In order to better understand the geochemical processes of transportation and release of elements in mine area,sulfur isotopic compositions of the dissolved sulfate and bed sediments in Hou River water system in Hezhang County have been investigated in this study.The results show that the sulfur isotopic compositions in water are obviously different from those of the sediment.There is a good correlation between the δ34S values and SO2-4 contents in different water samples.It is believed that the sulfur in river water and sediments was mainly come from the sulfur released by the mining activities.It is also indicated that sulfur isotopic compositions of the dissolved sulfate in water and bed sediments not only can reflect the water pollution degree and its diffusing distance or/and range of the polluted water,but also can show the geochemical processes of the oxidation of sulfides in sediments.更多还原