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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>;...
Employing the triangular fuzzy technology, the article establishes a health risk assessment model for small scale water supply source. By using this model not only the value of probable risk indexes of specific substance influencing people's health but also their corresponding membership degrees (or relative confidence levels) can be obtained. The model is applied to assess the environmental health...
Given a description of city environment of Zhuzhou from the geochemical and geological environment, the author carried out further research on city ecological geochemistry and discussed the pollution of soil heavy metal through correlations analysis, R-cluster analysis and classified statistic of parent rock.
Total of 120 soil samples from the topsoil (0-20 cm) at an approximate interval of 100 m were collected in Wutan, China, to determine the spatial variability of five heavy metals, Cd, As, Hg, Pb, and Cr, with classical statistical and geostatistical analyses. Ordinary kriging was utilized for estimating heavy metals determination. Classical statistical indicated that As, Pb, and Cr concentrations...
About 40 kinds of inorganic elements in Atmospheric fine particles (PM2.5) were determined using the ICP-MS techniques based on the observational date during the period from 7 September to 27 November 2007. The PM2.5 samples were collected by the US R&P-1400a ambient particulate monitor. Here we analyzed the characteristics of 34 kinds of principal components in haze and non-haze days. The results...
Soil samples were collected from farmland near a Pb-Zn factory in a karst area of Guangxi. The Zn, Pb, Cd, Hg, Cu, Ni, As, and Cr content of these samples were determined. The spatial distributions of these heavy metals, as well as the key factors affecting the distribution of the contamination, were examined. The results revealed that the means of Zn, Pb, Cd, and Hg concentrations in the samples...
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