Effect of short-term resuspension events on the oxidation of cadmium, lead, and zinc sulfide phases in anoxic estuarine sediments

Article Abstract:

This study examines metal sulfides stability to oxidation in seawater. The acid volatile sulfide/simultaneously extracted metals (AVS/SEM) theory is used to evaluate sediment quality to predict the absence of toxicity of Ca, Cu, Ni, Pb, and Zn.

Ocean & Coastal Water Pollution, Brief Article, Illustration, Marine pollution, Salts, Sediment, Suspended, Suspended sediment

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Beryllium-7 as a tracer of short-term sediment deposition and resuspension in the Fox River, Wisconsin

Article Abstract:

Tracking Beryllium-7 with sediment cores, the authors are able to estimate the movements of PCBs in the Fox River in Wisconsin based on resuspension and deposition statistics. Residual PCBs from the paper and pulp industry are charted for movement due to erosion fluctuations and other factors, instead of the distance from historical point sources of contamination.

Water Pollution, Wisconsin, Wood pulp industry, Pulp industry, Fox River

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Effect of short-term resuspension events on trace metal speciation in polluted anoxic sediments

Article Abstract:

Aerated water allowed FeS abd MnS model phases, which were found to be particularly labile, to oxidize rapidly. Meanwhile, it took CdS, CuS, PbS and ZnS model phases several stabilize kinetically. Results reveal that FeS and MnS phases may reduce the effects bioirrigation during bioturbation. Moreover, trace metal sulfide phases may stay unoxidized for a certain period of time.

Research and Development in the Physical, Engineering, and Life Sciences, Water Pollution Control R&D, Water pollution research, Metal wastes

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