QE276 : Investigation on soil mextal contamination in the vicinity of Abyek cement plant (Alborz Province)
Thesis > Central Library of Shahrood University > Geosciences > MSc > 2015
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Abstarct: Abyek cement plant as one of the largest cement factories in Iran is located in the Alborz province. This study is conducted with the aim of evaluating the mextal pollution of topsoil around the cement plant. For this purpose, 20 topsoil samples (0 to 15 cm depth) were collected randomly from the study area. Also one soil sample was taken as local background sample far away from the plant (7800 m). The main soil physicochemical properties, including soil texture, organic matter content and pH of collected samples were determined by standard methods. Also, total concentration of elements in soil samples were measured by ICP-OES instrument. The obtained data were compared with permissible values and geochemical indices (EF, Igeo, Cf, Cd, PLI, RI) were also calculated. The obtained data were statistically analyzed using multivariate methods (correlation analysis, cluster analysis and principal component analysis) and finally the zoning map of soil contamination were drawn. The results generally showed that in the studied soil samples, the average concentration of total As (15.45 mg/Kg), Cd (0.95 mg/Kg), Co (15.8 mg/Kg), Pb (32.5 mg/Kg), Zn (79.5 mg/Kg), Ca (128325 mg/Kg) and Mg (19840 mg/Kg) are higher than local background sample; while the average of total concentrations of Cu (29.25 mg/Kg) and Ni (41.95 mg/Kg) are close to local background level and the concentration of Cr (54.8 mg/Kg) is lower than its corresponding local level. Also pH of the studied soil samples is moderately alkaline to very alkaline (8-8.87) and higher than those control soil sample. The calculated geochemical indices indicated that the studied soil samples were substantially contaminated by mextals particularly in the direction of prevailing wind. baxsed on the results of statistical analysis, the elements Cd, As, Pb, Zn, Co, Mg and Ca are mainly from anthropogenic sources (activity of the cement factory) in soils of the studied area, while Ni, Cr and Cu have probably natural source. In general, this stady concludes that activity of Abyek cement plant is possible source of mextal contamination in neighboring soils.
Keywords:
#Abyek cement factory #mextal contamination #dust #geochemical indices Link
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