1. Department of Chemistry Kumasi, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana;
2. Environmental Chemistry & Toxicology, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China;
3. Laboratory of Toxicology, Department of Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan