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Comment on ‘Measuring Marine Iron(iii) Complexes by CLE-AdSV’

Keith A. Hunter
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Department of Chemistry, University of Otago, Dunedin, New Zealand. Email: khunter@alkali.otago.ac.nz

Environmental Chemistry 2(2) 85-87 https://doi.org/10.1071/EN05030
Submitted: 10 May 2005  Accepted: 10 May 2005   Published: 24 June 2005

Environmental Context. Town and Leeuwen’s paper (Environ. Chem. 2005, 2, 80) challenges interpretations of the role of organic matter binding iron in the ocean. This challenge is based on the theory behind a commonly used electrochemical technique, CLE-AdSV. Consistent experimental measurements for iron and other metals and the use of other techniques suggests that their interpretation of iron(III) being non-bioavailable is incorrect and, rather, the use of CLE-AdSV needs to be modified.

Keywords. : biogeochemistry — electrochemistry (analysis) — iron — speciation (metals)


Acknowledgements

I am grateful to Sylvia Sander for helpful discussions and to Tian (Edmund) Feng for supplying me with the titration data in Fig. 1.


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