Accumulation and Environmental Risk on Heavy Metal Pollution in Bottom Sediments of Surface Waters in Xiao Qinling Gold Mine Belt, China

Abstract:

Heavy metals accumulation in river sediments can reflect the environmental quality of river waters. Its of practical significance to study the accumulation level of heavy metals in river sediments and its environmental risk. this thesis study on the heavy metals accumulation in river sediments of three typical river of Xiao qinling gold mine area, and the results showed that the mercury, lead , zine, cadmium and copper elements are characteristic contaminations, respectively. In Shuangqiao river, the average values of mercury, lead , copper and zine were 94·72, 25.34, 3388.67, 376.77 and 675.90 mg·kg-1, the five elements show the larger variety in tong river and Shuangqiao river than the oher five rivers. respectively. The environmental risk assessment by using geoaccumulation index (Igeo) indicated that these seven rivers a high-very high rank environmental risk of heavy metals accumulation in river sediments, the environmental risk probability orders of seven river sediments is Tong river > Shuangqiao river> Xijian river > Yiluo river> Sha river > Zaoxiang river> Yangping river . and there was highest environmental risk in Eolian loess area. So There are the probability of achieving higher risk than now if local government wouldnt Adopt effectively manage measure river to rivers.

• Periodical: Advanced Materials Research (Volume 773)
• Pages: 862-868
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.773.862
• Online since: September 2013
• Authors: Rui Ping Liu, You Ning Xu, Jiang Hua Zhang, Hua Qing Chen, He Fang, Xian Li, Hai Ling Ke, Gang Qiao
• Keywords: Environmental Risk, Heavy Metal, Sediment, Xiao Qinling Gold Area

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