The influence of structural features of marine humic substances on the accumulation rates of cadmium by a blue mussel Mytilus edulis

Conference · Sat Jan 01 04:00:00 EST 1994 · Environment International; (United States)

OSTI ID:7065885

Pempkowiak, J; Kozuch, J ^[1]; Southon, T ^[2]

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1. Institute of Oceanology, Sopot (Poland)
2. Norwegian Institute of Technology, Trondheim (Norway)

Laboratory experiments revealed that both concentration and origin of humic substances (HS) influence the accumulation rates of cadmium by the blue mussel Mytilus edulis. In the concentration of humic substances typical of seawater, the increase is about 60% and 100%, respectively, for aquatic and sedimentary humic substances. The phenomenon was attributed to the stimulation of cadmium uptake due to complexing properties of the substances toward cadmium. Complexing capacity of sedimentary humic substances was found to be 0.57 [mu]g/mg HS, that of aquatic substances 0.41 [mu]g/mg HS. Cross Polarization Magic Angle Spinning (CP/MAS) [sup 13]C NMR of the investigated humic substances revealed differences in the spectra at about 175, 100, 55 and 32 ppm. This was attributed to the varying content of oxygen containing functional groups involved in formation of complexes with metal ions. 8 refs., 4 figs., 3 tabs.

• OSTI ID: 7065885
• Report Number(s): CONF-9306371--
• Conference Information: Journal Name: Environment International; (United States) Journal Volume: 20:3
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOCHEMISTRY
BIOLOGICAL ACCUMULATION
BIOLOGICAL AVAILABILITY
BIOLOGICAL EFFECTS
CADMIUM
CHEMISTRY
ELEMENTS
HYDROGEN COMPOUNDS
INVERTEBRATES
MATTER
METALS
MOLLUSCS
MUSSELS
ORGANIC MATTER
OXYGEN COMPOUNDS
SEAWATER
SOLUTES
WATER