1. Chemistry, School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
2. Institute of Environmental Science and Research (ESR), P.O. Box 50348, Porirua 5240, New Zealand
3. EaStCHEM School of Chemistry, North Haugh, University of St Andrews, St Andrews, Fife KY16 9ST, U.K.
4. School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
5. School of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North 4410, New Zealand