Sequential sorption of lead and cadmium in three tropical soils
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Sequential sorption of lead and cadmium in three tropical soils.
It is important to examine mechanisms of Pb and Cd sorption in soils to understand their bioavailability. The ability of three tropical soils to retain Pb, Cd, and Ca was evaluated. The objectives of this study were to (1) determine the extent to which soil sorption sites are metal specific, (2) investigate the nature of reactions between metals and soil surfaces, and (3) identify how metals co...
متن کاملConcentration, pH, and surface charge effects on cadmium and lead sorption in three tropical soils.
Reactions of heavy metals with soil are important in determining metal fates in the environment. Sorption characteristics of two heavy metals, Cd and Pb, in three tropical soils (Mollisol, Oxisol, and Ultisol) from Puerto Rico were assessed at varying metal concentrations (0 to 1.2 mM) and pH values (approximately 2 to 7). All soils sorbed more Pb than Cd. Sorption maxima were obtained for each...
متن کاملConcentration, pH, and Surface Charge Effects on Cadmium and Lead Sorption in Three Tropical Soils
blood pressure, reproductive abnormalities, developmental defects, abnormal vitamin D metabolism, and in Reactions of heavy metals with soil are important in determining some situations death (Hrudey et al., 1995; USEPA, metal fates in the environment. Sorption characteristics of two heavy metals, Cd and Pb, in three tropical soils (Mollisol, Oxisol, and Ultisol) 1992). from Puerto Rico were as...
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15 صفحه اولEvaluation of pyrene sorption-desorption on tropical soils.
Sorption-desorption processes control soil-pollutant interactions. These processes determine the extent of pyrene transport in soils. Understanding sorption characteristics of pyrene is necessary in ascertaining its fate in soil. Laboratory batch experiments were conducted to study the sorptions-desorption of pyrene on eight soils from varying tropical agro-ecological zones (AEZs). The results ...
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ژورنال
عنوان ژورنال: Environmental Pollution
سال: 2008
ISSN: 0269-7491
DOI: 10.1016/j.envpol.2007.10.026