Department of Chemistry, University of Otago

Professor Keith A. Hunter

Professor Keith A. Hunter: (Pro-Vice Chancellor - Sciences)
Marine chemistry and biogeochemistry of trace metals; Tel: +64 3 479 7917; Location: Division of Sciences; keith.hunter@otago.ac.nz

Chemical equilibria in marine and fresh waters, particularly involving CO₂; measurement techniques for the CO₂ equilibrium system in seawater.
Trace metals in natural waters and their interactions with phytoplankton; analytical techniques for trace metals; trace metal speciation in natural waters.
Colloids and surfaces in marine and freshwater systems; the sea-surface microlayer; mechanisms and kinetics of colloid aggregation.

Trace metal speciation in lake waters and the production of strong, metal-binding ligands by phytoplankton (PGSF funded, with S.G. Sander).
Colloid aggregation in estuaries (PGSF funded, with J.P. Kim & U. Nowostawska).
CO₂ properties of seawater and ocean acidification (with K.C. Currie, C.L. Hurd, C. McGraw and M. Reid).
Equilibrium constants for H₂CO₃ and the effect of borate (MSc, H. Doyle).
Origin of Fe-binding organic ligands in seawater (with E. Ibisanmi, S.G. Sander and P.W. Boyd).
Calibrating the cadmium paeloproxy: Cd uptake by phytoplankton and effects on Cd isotopic composition (Marsden grant, with M. Gault-Ringold, C. Stirling and R. Strzepek).
Marine siderophores: structure and function (with I. Velasquez, S.G. Sander and G. Cook).
Application of MC-ICPMS techniques to determine the sources of metal ion pollution in aquatic systems (with M. Numata, M. Poffet and C. Stirling).
Virus hitchhikers: is virus transport through aquifers accelerated by colloids? (Marsden grant, with G. Walsh and Liping Pang, ESR).

Co-editor, Marine & Freshwater Research (CSIRO Publishing).
Member of the Royal Society of New Zealand Advisory Committee on Marine Science; New Zealand delegate to SCOR.
Member, GESAMP Working Group 38, The Atomspheric Input of Chemicals to the Ocean.
Co-chair, together with Professor David Turner, University of Goteborg, of the joint SCOR-IUPAC Working Group 109, The Biogeochemistry of Iron in Seawater.