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 00:00:00 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-; CODEN: ENVIDV
• Journal Information: Environment International; (United States), Vol. 20:3; Conference: 4. Nordic symposium on humic substances, Loen (Norway), 7-9 Jun 1993; ISSN 0160-4120
• Country of Publication: United States
• Language: English

Related Subjects

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