The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach
Studying the bioavailability of sediment-bound contaminants is complicated by many reasons, such as the variable composition of the particles, their temporal variations, the low levels of contaminant concentrations, their partitioning between diverse aqueous and particulate phases, and the variety o...
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todo:paper_0013936X_v40_n20_p6341_Piol2023-10-03T14:11:41Z The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach Piol, M.N. López, A.G. Miño, L.A. Dos Santos Afonso, M. Verrengia Guerrero, N.R. Absorption Cadmium Composition Computer software Concentration (process) Sediments Bioaccumulation Bioavailability Humic acids Metal recovery cadmium heavy metal Absorption Cadmium Composition Computer software Concentration (process) Metal recovery Sediments absorption annelid bioaccumulation bioavailability cadmium humic acid particle size pollutant sediment budget temporal variation absorption annelid worm article bioaccumulation bioavailability computer program freshwater environment lumbriculus variegatus metal binding nonhuman organic pollution particle size partition coefficient sediment transport surface property Animals Biological Transport Cadmium Humic Substances Iron Chelating Agents Kinetics Molecular Structure Oligochaeta Particle Size Software Solubility Water Lumbriculus variegatus Studying the bioavailability of sediment-bound contaminants is complicated by many reasons, such as the variable composition of the particles, their temporal variations, the low levels of contaminant concentrations, their partitioning between diverse aqueous and particulate phases, and the variety of uptake routes that may involved with the biota. Therefore, simple and innovative methodologies should be tested as analogues for natural sediments. Among them, a diverse selection of artificial particles with well-defined surface properties, in the presence and absence of commercially available humic acids, has been proposed and used to investigate the bioavailability of several organic pollutants. For this work, this model was applied to investigate the uptake and accumulation of cadmium by the freshwater oligochaete Lumbriculus variegatus. The results showed that the uptake of the metal depended on the free dissolved Cd(II) species, while the contribution from the particles was negligible. Thus, the extent of cadmium bioaccumulated from each test system could be predicted as a function of the rate of absorption of the free dissolved Cd(II) species. These species were calculated either from the particle-water partition coefficients, or by using the MINEQL+ computer program. In general, the estimated accumulation levels were in good agreement with the experimental results. © 2006 American Chemical Society. Fil:Piol, M.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Verrengia Guerrero, N.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0013936X_v40_n20_p6341_Piol |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Absorption Cadmium Composition Computer software Concentration (process) Sediments Bioaccumulation Bioavailability Humic acids Metal recovery cadmium heavy metal Absorption Cadmium Composition Computer software Concentration (process) Metal recovery Sediments absorption annelid bioaccumulation bioavailability cadmium humic acid particle size pollutant sediment budget temporal variation absorption annelid worm article bioaccumulation bioavailability computer program freshwater environment lumbriculus variegatus metal binding nonhuman organic pollution particle size partition coefficient sediment transport surface property Animals Biological Transport Cadmium Humic Substances Iron Chelating Agents Kinetics Molecular Structure Oligochaeta Particle Size Software Solubility Water Lumbriculus variegatus |
| spellingShingle |
Absorption Cadmium Composition Computer software Concentration (process) Sediments Bioaccumulation Bioavailability Humic acids Metal recovery cadmium heavy metal Absorption Cadmium Composition Computer software Concentration (process) Metal recovery Sediments absorption annelid bioaccumulation bioavailability cadmium humic acid particle size pollutant sediment budget temporal variation absorption annelid worm article bioaccumulation bioavailability computer program freshwater environment lumbriculus variegatus metal binding nonhuman organic pollution particle size partition coefficient sediment transport surface property Animals Biological Transport Cadmium Humic Substances Iron Chelating Agents Kinetics Molecular Structure Oligochaeta Particle Size Software Solubility Water Lumbriculus variegatus Piol, M.N. López, A.G. Miño, L.A. Dos Santos Afonso, M. Verrengia Guerrero, N.R. The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| topic_facet |
Absorption Cadmium Composition Computer software Concentration (process) Sediments Bioaccumulation Bioavailability Humic acids Metal recovery cadmium heavy metal Absorption Cadmium Composition Computer software Concentration (process) Metal recovery Sediments absorption annelid bioaccumulation bioavailability cadmium humic acid particle size pollutant sediment budget temporal variation absorption annelid worm article bioaccumulation bioavailability computer program freshwater environment lumbriculus variegatus metal binding nonhuman organic pollution particle size partition coefficient sediment transport surface property Animals Biological Transport Cadmium Humic Substances Iron Chelating Agents Kinetics Molecular Structure Oligochaeta Particle Size Software Solubility Water Lumbriculus variegatus |
| description |
Studying the bioavailability of sediment-bound contaminants is complicated by many reasons, such as the variable composition of the particles, their temporal variations, the low levels of contaminant concentrations, their partitioning between diverse aqueous and particulate phases, and the variety of uptake routes that may involved with the biota. Therefore, simple and innovative methodologies should be tested as analogues for natural sediments. Among them, a diverse selection of artificial particles with well-defined surface properties, in the presence and absence of commercially available humic acids, has been proposed and used to investigate the bioavailability of several organic pollutants. For this work, this model was applied to investigate the uptake and accumulation of cadmium by the freshwater oligochaete Lumbriculus variegatus. The results showed that the uptake of the metal depended on the free dissolved Cd(II) species, while the contribution from the particles was negligible. Thus, the extent of cadmium bioaccumulated from each test system could be predicted as a function of the rate of absorption of the free dissolved Cd(II) species. These species were calculated either from the particle-water partition coefficients, or by using the MINEQL+ computer program. In general, the estimated accumulation levels were in good agreement with the experimental results. © 2006 American Chemical Society. |
| format |
JOUR |
| author |
Piol, M.N. López, A.G. Miño, L.A. Dos Santos Afonso, M. Verrengia Guerrero, N.R. |
| author_facet |
Piol, M.N. López, A.G. Miño, L.A. Dos Santos Afonso, M. Verrengia Guerrero, N.R. |
| author_sort |
Piol, M.N. |
| title |
The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| title_short |
The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| title_full |
The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| title_fullStr |
The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| title_full_unstemmed |
The impact of particle-bound cadmium on bioavailability and bioaccumulation: A pragmatic approach |
| title_sort |
impact of particle-bound cadmium on bioavailability and bioaccumulation: a pragmatic approach |
| url |
http://hdl.handle.net/20.500.12110/paper_0013936X_v40_n20_p6341_Piol |
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