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The concentrations of As, Cd, Ni, Cr, Zn, Cu, Hg and Pb in the sediment of Xiyi River were analyzed by flame atomic absorption spectrophotometer (AAS). The results showed the average concentration of total As, Cd, Ni, Cr, Zn, Cu, Hg and Pb in the sediment was higher than the national threshold limit. The values of pollution index and integrated pollution index showed that the pollution level was Cd>;...
The contents and characteristics of ten heavy metals in surface sediments from Yangzonghai Lake in Yunnan, China were analyzed. Ecological risk index presented by Håkanson to assess the potential ecological risk of Yangzonghai Lake was utilized. The results showed that the average concentrations of titanium(Ti), manganese(Mn), zinc(Zn), vanadium(V), chromium(Cr), copper(Cu), nickel(Ni), cobalt(Co),...
Dustfall samples were synchronously collected at five typical urban functional areas (industrial area, traffic area, residential area, cultural and educational area, residential and commercial mixed area) of Pingdingshan City in Henan Province from May 2008 to April 2009. The principal component elements in dustfall samples were analyzed for concentrations, spatial distribution, sources and contributions...
This paper presents a investigation of pollution originating from coal ash in Jingangshan thermal power station Jiangxi province China. About half of coal ash obtained by coal combustion in the power plant is mixed with ash-flushing water (most of the ash-flushing water from Ganjiang river) and transported to the ash field through the pipeline. In order to assess pollution caused by leaching of some...
Taking the Beitang and Dagu Sewage Discharge Channels in Tianjin, China, as study objects, concentrations of heavy metals and organic matter are determined in upper layer, middle layer and lower layer sediment samples. Geo-accumulation index method and correlation analysis are taken to study the distribution and pollution level of metals between layers in the two channels contrastively. The results...
At a stage of rapid economic development and urbanization in China, most cities are faced with such serious problems caused by environment deterioration as pollution, space press, afforestation degradation and disordering. Kunshan City, one of the most economically vigorous regions in China, has suffered a more prominent confliction between urbanization and environmental safety. In this paper, urban...
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