Radionuclide bioconcentration factors and sediment partition coefficients in Arctic Seas subject to contamination from dumped nuclear waste

Article Abstract:

The former Soviet Union's disposal of large quantities of radioactive wastes in Arctic Seas has inspired interest in the behavior of long-lived radionuclides in polar waters. Previous studies of such pollution have been conducted in temperate waters. Here the researchers presented the concentrations in seawater and calculated in situ bioconcentration factors for 90Sr, 137Cs, and 239 and 240 Pu. These three represent the most important radionuclides in Arctic risk assessment.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Arctic, Industrial inorganic chemicals, not elsewhere classified, Strontium & Compounds, Cesium, Plutonium, Former Soviet Union, Nuclear industry, Pollution, Strontium compounds

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Accumulation and retention of metals in mussels from food and water: a comparison under field and laboratory conditions

Article Abstract:

The bioaccumulation and efflux rates of six metals in the mussel Mytilus galloprovincialis following uptake from water or food are compared under field and laboratory conditions. Laboratory- and field-derived estimates of metal absorption efficiencies and efflux rates from the soft parts of mussels were generally similar. Metals obtained from food were mainly bound to soft part tissues, while metals from the dissolved phase were mostly associated with the shells.

Physiological aspects, Bioaccumulation, Physiological absorption, Absorption (Physiology)

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Bioavailability of Cr(III) and Cr(VI) to marine mussels from solute and particulate pathways

Article Abstract:

A study aimed at determining the bio-availability of Cr(III) and Cr(VI) to the mussel Mytilus edulis is presented. The experiment utilized a bioenergetic-based kinetic model to identify the various contributions of different Cr species and their accumulation routes to the subsequent concentration of Cr in mussels. The results of the experiment indicate that the bioenergetic-based kinetic model can ideally be used in determining Cr concentrations in mussels.

Primary nonferrous metals, not elsewhere classified, Shellfish, Shellfish Fishing, Chromium, Seafood, Contamination, Chromium (Metal)

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