Some observations on surface partitioning of Cd, Cu, and Zn in estuaries

Article Abstract:

A surface adsoption model was developed based on data collected from water bodies in the Savannah River Estuary to allow the determination the behavior of metal ions in estuarine environments. The model allowed development of the ratio of the concentration of particulate matter, total dissolved solids and the pH of the water systems. Evaluation of trace metals in the water surface revealed high amounts cadmium and zinc. This suggests that particulate iron has potentials for removing metal ion deposits in aquatic systems.

Estuaries, Savannah River

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Prediction of in situ trace metal distribution coefficients for suspended solids in natural waters

Article Abstract:

A metal distribution coefficient model was developed to assess the environmental impact of suspended solids in natural waters. The study reveals that the model was capable of predicting zinc and copper sorption to suspended solids in natural waters. The model was also capable of explaining the variability of distribution coefficients of 75% for zinc and 95% for copper. The model was evaluated on stagnant waters in the Netherlands to determine constants for surface and aqueous phase complexation.

Water Pollution Control R&D, Water pollution, Water pollution research

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Extractability of metal sulfide minerals in acidic solutions: application to environmental studies of trace metal contamination within anoxic sediments

Article Abstract:

The use of HCL-based extraction schemes in studying trace metal contamination in anoxic sediments may present several limitations, especially as some metal sulfide phases that can potentially release metals into a more bioavailable phase do not extract in HCL. These include covellite, chalcocite, cinnabar, millerite, hiezelwoodite and vaesite, all of which are only slightly soluble in HCl; and greenockite, mackinawite, pyrrohtite, galena and sphalerite which are highly soluble in HCl.

Chemistry, Methods, Chemistry, Analytic, Analytical chemistry, Sedimentation and deposition, Deposition (Geology)

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