Fish Uptake of Inorganic and Mucus Complexes of Lead

Carassius auratus were exposed to lead in synthetic water. Mucus secreted from the fish was measured and characterized for its lead binding capacity. The increase in mucus concentration in the water depended on secretion and degradation rates and the former was speeded up by lead. The complexation b...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2000-06, Vol.46 (2), p.174-180
Main Authors: Tao, Shu, Li, Hang, Liu, Changfa, Lam, K.C.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal, plant and microbial ecology
Animals
Applied ecology
bioavailability
Biological and medical sciences
Biological Availability
Carassius auratus
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on vertebrates
fish
Fundamental and applied biological sciences. Psychology
Goldfish - metabolism
lead
Lead - pharmacokinetics
mucus
Mucus - metabolism
speciation
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Summary:Carassius auratus were exposed to lead in synthetic water. Mucus secreted from the fish was measured and characterized for its lead binding capacity. The increase in mucus concentration in the water depended on secretion and degradation rates and the former was speeded up by lead. The complexation between mucus and lead can be described based on a single-site interaction model. Lead speciation in the system with or without mucus was calculated using chemical equilibrium modeling. The dominant species of lead was PbCO30. Other major species included Pb(OH)+, Pb(OH)20, Pb(CO3)22−, Pb–mucus, and Pb2+, among which free lead and lead hydroxo complexes were available to fish uptake.
ISSN:0147-6513
1090-2414
DOI:10.1006/eesa.1999.1902