Trace Metals Speciation Articles & Analysis
7 articles found
The objective of this study was to assess total concentration and chemical fractionation of trace metals in the industrial wastewater and sludge collected from seven different types of industries in Dhaka City, Bangladesh. The sludge from industries is either dumped on landfills or reused as secondary resources in order to preserve natural resources. Metals were analyzed using inductively ...
We apply the chemical speciation model WHAM/Model VII to investigate the distribution of metal species of Fe(III) and the divalent cations of Ni, Cu, Zn, Cd, Hg and Pb, in the water column of estuaries and coastal areas. We compare, for the same locations, measured and modelled free ion and organically bound metal concentrations. The modelled free ion calculations show varying levels of ...
Received for publication July 17, 2006. Knowledge of trace metal speciation in soil pore waters is important in addressing metal bioavailability and risk assessment of contaminated soils. ...
A selective and sensitive method for determining free metal activities (M2+) for Cd, Cu and Pb in aqueous solutions is presented based on the Lingane and DeFord and Hume models. Electrochemical and complexation studies were carried out by direct current voltammetry (DCV) and by metal ion selective electrodes (ISE) as a reference method. A voltammetric equation ...
Metal-buffer solutions were prepared to control (M2+), which was varied by using different ligands and by changing pH. Total metal aqueous concentration of 10-6–10-7M and metal-ligand ratios of 1:20M, 0.010M acetate medium were used. ...
Trace metals showed distinct diagenetic behaviour in the two contrasting environments that were sampled. ...
The literature on trace metal status in marine biological samples is reviewed, taking into account the importance of the subject. Marine organisms accumulate trace metals to body concentrations well above those in seawater. Different marine organisms differ significantly in accumulated tissue and total body concentrations of ...