| Affiliation: | 1. Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg 2050, South Africa;2. Toxicology and Biochemistry Department, National Institute for Occupational Health, A Division of National Health Laboratories, Johannesburg, South Africa;3. Water Research Group, Unit for Environmental Sciences and Management, Northwest University, Private Bag X6001, Potchefstroom 2520, South Africa;2. Colorado Quality Research, INC, Wellington, CO 80549, USA |
