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Title: Bioavailability of heavy metals in terrestrial and aquatic systems: A quantitative approach

Abstract

Speciation and bioavailability are the keywords in the relation between the total metal content of the system and the resulting effects for biota. The metal ion binding to the biotic surface is pH dependent, as is metal ion binding to soils. The binding of metal ion to the biotic surface of an organism when present in soil can decrease with increasing pH, whereas the binding behavior of the biotic surface as such will always increase with increasing pH. The metal toxicity for plants often increases with increasing pH for water culture experiments, in which the opposite effect is observed for plants growing in soils. These seemingly contradictive observations can be explained by considering the interaction between an organism and metal ions present in soil to be the result of competition for that metal ion by all components (including the organism) present in the system. This concept is illustrated on the basis of model calculations concerning cadmium binding to a bacterium present in a clay and a sandy soil as influenced by pH and calcium concentration. In addition, the concept is applied for calculating the impact of algal bloom on the copper speciation in an aquatic system. The concept might bemore » a valuable tool in predicting quantitatively the metal ion sorption to biota present in a complex system and to predict the relative change in availability due to environmental changes.« less

Authors:
; ; ;
Publication Date:
Research Org.:
DLO-Inst. of Forestry and Nature Research, Wageningen (NL)
OSTI Identifier:
20006619
Alternate Identifier(s):
OSTI ID: 20006619
Resource Type:
Journal Article
Journal Name:
Environmental Toxicology and Chemistry
Additional Journal Information:
Journal Volume: 18; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0730-7268
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; TERRESTRIAL ECOSYSTEMS; AQUATIC ECOSYSTEMS; POLLUTION; BIOLOGICAL AVAILABILITY; COPPER; CADMIUM; BIOLOGICAL EFFECTS

Citation Formats

Plette, A.C.C., Nederlof, M.M., Temminmghoff, E.J.M., and Riemsduk, W.H. van. Bioavailability of heavy metals in terrestrial and aquatic systems: A quantitative approach. United States: N. p., 1999. Web. doi:10.1897/1551-5028(1999)018<1882:BOHMIT>2.3.CO;2.
Plette, A.C.C., Nederlof, M.M., Temminmghoff, E.J.M., & Riemsduk, W.H. van. Bioavailability of heavy metals in terrestrial and aquatic systems: A quantitative approach. United States. doi:10.1897/1551-5028(1999)018<1882:BOHMIT>2.3.CO;2.
Plette, A.C.C., Nederlof, M.M., Temminmghoff, E.J.M., and Riemsduk, W.H. van. Wed . "Bioavailability of heavy metals in terrestrial and aquatic systems: A quantitative approach". United States. doi:10.1897/1551-5028(1999)018<1882:BOHMIT>2.3.CO;2.
@article{osti_20006619,
title = {Bioavailability of heavy metals in terrestrial and aquatic systems: A quantitative approach},
author = {Plette, A.C.C. and Nederlof, M.M. and Temminmghoff, E.J.M. and Riemsduk, W.H. van},
abstractNote = {Speciation and bioavailability are the keywords in the relation between the total metal content of the system and the resulting effects for biota. The metal ion binding to the biotic surface is pH dependent, as is metal ion binding to soils. The binding of metal ion to the biotic surface of an organism when present in soil can decrease with increasing pH, whereas the binding behavior of the biotic surface as such will always increase with increasing pH. The metal toxicity for plants often increases with increasing pH for water culture experiments, in which the opposite effect is observed for plants growing in soils. These seemingly contradictive observations can be explained by considering the interaction between an organism and metal ions present in soil to be the result of competition for that metal ion by all components (including the organism) present in the system. This concept is illustrated on the basis of model calculations concerning cadmium binding to a bacterium present in a clay and a sandy soil as influenced by pH and calcium concentration. In addition, the concept is applied for calculating the impact of algal bloom on the copper speciation in an aquatic system. The concept might be a valuable tool in predicting quantitatively the metal ion sorption to biota present in a complex system and to predict the relative change in availability due to environmental changes.},
doi = {10.1897/1551-5028(1999)018<1882:BOHMIT>2.3.CO;2},
journal = {Environmental Toxicology and Chemistry},
issn = {0730-7268},
number = 9,
volume = 18,
place = {United States},
year = {1999},
month = {9}
}