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Trace metals in the open oceans: speciation modelling

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Trace metals in the open oceans: speciation modelling. / Stockdale, Anthony; Tipping, Edward; Hamilton-Taylor, John et al.
In: Environmental Chemistry, Vol. 8, No. 3, 22.06.2011, p. 304-319.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Stockdale, A, Tipping, E, Hamilton-Taylor, J & Lofts, S 2011, 'Trace metals in the open oceans: speciation modelling', Environmental Chemistry, vol. 8, no. 3, pp. 304-319. https://doi.org/10.1071/EN11004

APA

Stockdale, A., Tipping, E., Hamilton-Taylor, J., & Lofts, S. (2011). Trace metals in the open oceans: speciation modelling. Environmental Chemistry, 8(3), 304-319. https://doi.org/10.1071/EN11004

Vancouver

Stockdale A, Tipping E, Hamilton-Taylor J, Lofts S. Trace metals in the open oceans: speciation modelling. Environmental Chemistry. 2011 Jun 22;8(3):304-319. doi: 10.1071/EN11004

Author

Stockdale, Anthony ; Tipping, Edward ; Hamilton-Taylor, John et al. / Trace metals in the open oceans : speciation modelling. In: Environmental Chemistry. 2011 ; Vol. 8, No. 3. pp. 304-319.

Bibtex

@article{717a67ceaa0d45038882c8442bc1f129,
title = "Trace metals in the open oceans: speciation modelling",
abstract = "The speciation of trace metals in the oceans is typically explained by invoking the concept of metal binding to specific organic ligands, but a lack of detailed knowledge about the ligands has impeded the formulation of comprehensive models to predict speciation chemistry. The aim of our study was to shed further light on the possible role of humic-type ligands in trace metal complexation in the oceans by comparing published seawater (open ocean) speciation measurements with predictions obtained using a speciation model typically used for freshwater and soil systems (Windermere Humic Aqueous Model; WHAM). We show that in some cases, speciation of trace metals in seawater environments may be reasonably predicted using this model with its default parameter set, without any model fitting. The results support the idea that humic-type ligands may account for much of the observed organic binding at least in the cases of Fe, Cu and Pb. Although the model does not consistently provide agreement with the measured values, it provides a useful benchmark to compare different datasets and to examine variation in speciation as a result of varying levels of competing metal ion concentration and fulvic acid activity.",
author = "Anthony Stockdale and Edward Tipping and John Hamilton-Taylor and Stephen Lofts",
year = "2011",
month = jun,
day = "22",
doi = "10.1071/EN11004",
language = "English",
volume = "8",
pages = "304--319",
journal = "Environmental Chemistry",
issn = "1448-2517",
publisher = "CSIRO",
number = "3",

}

RIS

TY - JOUR

T1 - Trace metals in the open oceans

T2 - speciation modelling

AU - Stockdale, Anthony

AU - Tipping, Edward

AU - Hamilton-Taylor, John

AU - Lofts, Stephen

PY - 2011/6/22

Y1 - 2011/6/22

N2 - The speciation of trace metals in the oceans is typically explained by invoking the concept of metal binding to specific organic ligands, but a lack of detailed knowledge about the ligands has impeded the formulation of comprehensive models to predict speciation chemistry. The aim of our study was to shed further light on the possible role of humic-type ligands in trace metal complexation in the oceans by comparing published seawater (open ocean) speciation measurements with predictions obtained using a speciation model typically used for freshwater and soil systems (Windermere Humic Aqueous Model; WHAM). We show that in some cases, speciation of trace metals in seawater environments may be reasonably predicted using this model with its default parameter set, without any model fitting. The results support the idea that humic-type ligands may account for much of the observed organic binding at least in the cases of Fe, Cu and Pb. Although the model does not consistently provide agreement with the measured values, it provides a useful benchmark to compare different datasets and to examine variation in speciation as a result of varying levels of competing metal ion concentration and fulvic acid activity.

AB - The speciation of trace metals in the oceans is typically explained by invoking the concept of metal binding to specific organic ligands, but a lack of detailed knowledge about the ligands has impeded the formulation of comprehensive models to predict speciation chemistry. The aim of our study was to shed further light on the possible role of humic-type ligands in trace metal complexation in the oceans by comparing published seawater (open ocean) speciation measurements with predictions obtained using a speciation model typically used for freshwater and soil systems (Windermere Humic Aqueous Model; WHAM). We show that in some cases, speciation of trace metals in seawater environments may be reasonably predicted using this model with its default parameter set, without any model fitting. The results support the idea that humic-type ligands may account for much of the observed organic binding at least in the cases of Fe, Cu and Pb. Although the model does not consistently provide agreement with the measured values, it provides a useful benchmark to compare different datasets and to examine variation in speciation as a result of varying levels of competing metal ion concentration and fulvic acid activity.

U2 - 10.1071/EN11004

DO - 10.1071/EN11004

M3 - Journal article

VL - 8

SP - 304

EP - 319

JO - Environmental Chemistry

JF - Environmental Chemistry

SN - 1448-2517

IS - 3

ER -