农业环境科学学报2011，Vol.30Issue(2)：347-352,6.
秦岭神安沟矿区沟道地表水和沉积物中重金属分布形态研究
Distribution and Configuration of Heavy Metals in Surface Water Sediments: A Case Study of the Mining Area in Qinling,Shenangou, China
摘要
Abstract
To explore the enrichment of heavy metal in surface water sediments of mining area in Qinling, Shenangou, this article tested the content of each heavy metal, taking the surface water and sediments as the research objects. The configurations of heavy metals in surface water sediments were also analysed by using Tessier five-step sequential extraction methods. The result showed that there were no Zn, Ph, and Cd in surface water unaffected by the mining area and the contrast area was not polluted. However, it also showed that the upper, middle and lower reaches of water were relatively polluted by Pb and Cd which were 5.3 and 43.3 times above the allowed figures respectively. Therefore,it was not in accord with the standard for irrigation water. And the PLI of the water samples of sediments had reached Ⅲ grade and sediments were seriously polluted. The distribution of the heavy metals was as follows: the content of organic matter was the highest in Zn and Cd, the oxidation state of Fe-Mn was the highest in Ph, and bioavailability was the highest in Zn and Ph. Three conclusions could be drawn: ( 1 )The downstream water was unfit for irrigation; (2)The content of the heavy metal sediments tended to stabilize because the waster water emission from the mine field had been stopped; and (3)The surface water and heavy metal sediments of the mining area had been polluted severely,and needed urgent treatment.关键词
神安沟/铅锌矿区/重金属/Tessier连续萃取法/形态分析Key words
Shenangou/ lead-zinc mining area/ heavy metals/ tessier sequential extraction methods/ configuration analysis分类
资源环境引用本文复制引用
薛喜成,王攀,何勇,张蕊,毕吉嵩..秦岭神安沟矿区沟道地表水和沉积物中重金属分布形态研究[J].农业环境科学学报,2011,30(2):347-352,6.基金项目
陕西省自然科学基金项目(SJ08-ZT08-3) （SJ08-ZT08-3）
