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  • Concentrations and chemical fractions of Cu, Zn, Cd, and

    Abstract. Metal pollution in urban soils due to smelting and electroplating has become a severe problem in China. In this study, the concentration, chemical fraction, and leaching behavior of typical metals (Cu, Zn, Cd, and Pb) in soil samples from ten metallurgical sites were studied.

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  • Cu Zn 40 Pb 2 manufacturers suppliers madeinchina

    China Cu Zn 40 Pb 2 manufacturers Select 2019 high quality Cu Zn 40 Pb 2 products in best price from certified Chinese 2 Hour Timer manufacturers, Intelligent Tester 2 suppliers, wholesalers and factory on MadeinChina

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  • Distribution and speciation of metals (Cu, Zn, Cd, and Pb

    Highlights Agricultural soils contain higher metal concentrations than nonagricultural soils. The site located in the factory district has the highest metal concentration. Cu, Zn and Cd are dominated by residual fraction, and Pb by reducible fraction. Cd pollution should

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  • Solubility control of Cu, Zn, Cd and Pb in contaminated

    An attempt was made from separate published data to correlate total soluble Cu, Zn, Cd and Pb in soils to soil pH, organic matter content and total metal content. For Cu, the total Cu content of the soil was most highly correlated with total soluble Cu.

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  • Chemical Speciation of Zn, Cd, Cu, and Pb in Pore Waters

    The Donnan dialysis membrane technique minimizes these interferences and has been used in this study to determine free Zn 2+, Cd 2+, Cu 2+, and Pb 2+ activities in pore waters from 15 agricultural and 12 longterm contaminated soils. The soils vary widely in their origin, pH, organic carbon content, and total metal concentrations.

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  • The distribution of Cd, Cu, Pb and Zn in DeepDyve

    Read "The distribution of Cd, Cu, Pb and Zn in topsoils of Osnabrück in relation to land use, Science of the Total Environment" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  • Chemical Speciation and Potential Mobility of Heavy Metals

    The average potential mobility of Zn, Cu, Pb, and Sn in the soil samples studied were quite high implying that under favourable conditions they can be released to pollute the environment. The average potential mobility of the metals arranged in decreasing order was as follows: soil: Sn > Cu > Zn > Pb

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    Cu, Ni and Zn Phytoremediation and Translocation by Water

    Cu, Ni and Zn Phytoremediation and Translocation by Water Hyacinth Plant at ratio results were in the order of Ni > Cu > Zn revealing that Zn is more mobile from roots to shoots than Cu Ni. Highest concentrations of Cu, Ni and Zn in water were recorded at the mixed industrial used for Pb, Cd, Cu, Ni, Zn, and Cr, which are primarily

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  • Heavy Metals Distribution and Speciation in Soils around a

    Factor analysis revealed that while Pb, Cu and Zn would majorly be of anthropogenic origin, Mn and Fe are mainly of natural origin. Pb was found to be the most mobile with mobility factor of 71.8% while Fe has the least mobility factor of 3.62%. Regression analysis (r 2 = 0.71) further showed that Cu is correlated with Pb.

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  • Trace metal (Cd, Cu, Pb, Zn) fractionation in urban

    On a regional scale, however, the relative contributions from different sources in trace metal delivery can vary substantially. Appreciable amounts of Cd, Cu, Pb, and Zn to industrial and urban soils can be delivered by industrial sludge disposal, incineration of municipal waste, and car traffic (AjmoneMarsan and Biasioli 2010).

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