The lowest (210)Po concentration was measured in the gastropod Stomatella auricular (10.36-12.39Bq kg(-1)dry) and the highest in the bivalve Marica marmorata (193.51-215.60Bq kg(-1)dry). This concentrated (210)Po can then be passed along to the next trophic level of the marine food web. (210)Po is primarily absorbed from water and via ingestion of detrital material by gastropoda and bivalves. ![]() This study sets the baseline for the concentration of the natural-series radionuclide polonium-210 in two species of gastropods and four species of bivalves that are common to the Northern Arabian/Persian Gulf. The species-specific body concentrations of MeHg and THg in bivalves reflect the complicated interaction between the biodynamics of Hg(II) and MeHg and the different food sources.īioaccumulation of 210Po in common gastropod and bivalve species from the northern Gulf. > MeHg and THg concentrations reflect the interaction of Hg biodynamics and food. > Elimination of Hg(II) and MeHg controlled the interspecific variation in MeHg:THg ratio. > THg concentrations in the bivalves were generally related to the efflux rates of Hg(II). The orders of BCF values (ml x g -1 ) are as: Perna viridis (33.2) Significant difference in Hg accumulation and MeHg:THg ratio in different bivalves. The values of BCF in shells are the highest in organs all the three bivalves. The experimental results show that the stead-state of biology concentration factor (BCF, ml/g) of radioruthenium was approached around 6 days for most species of bivalves. Three kinds of marine bivalves (wild Saccostrea cucullata, aquacultured Perna viridis and aquacultured Pinctada martens), collected from Daya Bay, the South China Sea, were used to investigate the bio-accumulation of radioruthenium in the glass aquarium with natural seawater (pH 8.20, 35 per mille salinity, filtered by 0.45 μm) at ambient temperature under laboratory feeding conditions. International Nuclear Information System (INIS) Bio-accumulation kinetics of radioruthenium in marine bivalves.
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