The Specific Adsorption of Copper and Zinc in the North East Nile Delta Soils

H. Ahmed, S. A. Abou EL-Enan, T. Mosalm, A. Hassan
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Abstract

This study deals with the effect of soil properties on the specific adsorption of copper and zinc in the soils north eastern Nile Delta., so that seven soil profiles were taken. Then a detailed study was conducted to include physical and chemical properties of the soil samples as well as a quantitative specific adsorption of copper and zinc experiments were carried out. Percentage of soil organic matter ranged from 0.2% to 3.6%. Soil texture varies from silt to heavy clay. Percentage of calcium carbonate ranged from 1.3 to7.5 %. Soil pH values ranged from 7.5 to 9.7. Soil salinity varied from non-saline to saline, with salinity ranging from 1.4 to 32.7 dS.m -1 . CEC values ranged from 10.8 to 52.5 cmokg -1 soil. The specific adsorption of copper and zinc ions in presence of sodium as a monovalent cation was higher than that of calcium as a divalent cation. It was also found that the higher the concentration of the added ions, the higher the specific adsorption for Cu 2+ and Zn 2+ , which can be represeted by a straight line equation. The specific adsorption of copper and zinc in the surface soil samples was higher than that in the subsurface soil samples due to the roll of the soil organic matter.
东北尼罗三角洲土壤对铜和锌的吸附特性
本文研究了土壤性质对尼罗河三角洲东北部土壤铜、锌比吸附的影响。,这样就得到了7个土壤剖面。然后对土壤样品进行了详细的理化性质研究,并进行了铜和锌的定量吸附实验。土壤有机质含量为0.2% ~ 3.6%。土壤质地从淤泥到重粘土不等。碳酸钙的含量从1.3%到7.5%不等。土壤pH值在7.5 ~ 9.7之间。土壤盐分由非盐碱化到盐碱化,含盐量在1.4 ~ 32.7 dS之间。M -1。CEC值为10.8 ~ 52.5 cmokg -1土壤。钠作为一价阳离子存在时,铜和锌离子的吸附比高于钙作为二价阳离子存在时的吸附比。同时发现,添加离子浓度越高,对cu2 +和zn2 +的吸附比越高,可以用直线方程表示。由于土壤有机质的滚动,表层土壤样品中铜和锌的比吸附高于地下土壤样品。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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