Interpretation of complexometric titration data: an intercomparison of methods for estimating models of trace metal complexation by natural organic ligands.

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Date
2015Author
Pižeta, I.
Sander, S.G.
Hudson, R.J.M.
Omanović, D.
Baars, O.
Barbeau, K.A
Buck, K.N.
Bundy, R.M.
Carrascog, G.
Croot, P.L.
Garnier, C.
Gerringa, L.J.A.
Gledhill, M.
Hirose, K.
Kondo, Y.
Laglera, L.M
Nuester, J.
Rijkenberg, M.J.A.
Takeda, S.
Twining, B.S.
Wells, M.
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Show full item recordAbstract
With the common goal of more accurately and consistently quantifying ambient concentrationsof free metal ions
and natural organic ligands in aquatic ecosystems, researchers from 15 laboratories that routinely analyze trace
metal speciation participated in an intercomparison of statistical methods used to model their most common
type of experimental dataset, the complexometric titration. All were asked to apply statistical techniques that
they were familiar with to model synthetic titration data that are typical of those obtained by applying state-
of-the-art electrochemical methods–anodic stripping voltammetry (ASV) and competitive ligand
equilibration-adsorptive cathodic stripping voltammetry (CLE-ACSV)–to the analysis of natural waters. Herein,
we compare their estimates for parameters describing the natural ligands, examine the accuracy of inferred am-
bient free metal ion concentrations ([Mf]), and evaluate the influence of the various methods and assumptions
used on these.....
Journal
Marine ChemistryVolume
173Page Range
pp.3-24Document Language
enBest Practice Type
Best PracticeGuide
DOI Original
https://doi.org/10.1016/j.marchem.2015.03.006Citation
Pižeta, I.; Sander, S.G.; Hudson,, R.J.M.; Omanovi, D.; Baars, O.; Barbeau, K.A. et al (2015) Interpretation of complexometric titration data: An intercomparison of methods for estimating models of trace metal complexation by natural organic ligands. Marine Chemistry, 173, pp.3-24. DOI: https://doi.org/10.1016/j.marchem.2015.03.006Collections
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