Barrie M. Peake is an Associate Professor of Environmental Chemistry in the Department of Chemistry at the University of Otago, Dunedin New Zealand.Dr Rhiannon Braund is an Associate Professor in the School of Pharmacy at the University of Otago, Dunedin, New Zealand.Alfred Tong is a doctoral graduate from the School of Pharmacy and the Department of Chemistry, at the University of Otago, Dunedin, New Zealand.Dr Louis Tremblay is an ecotoxicologist at the Cawthron Institute , Nelson, New Zealand and a Senior Lecturer at the School of Biological Sciences, University of Auckland, Auckland, New Zealand.