Dr. CHEUNG got his Bachelor of Science and Master of Philosophy Degrees from The Chinese University of Hong Kong. After that, he got his Doctor of Philosophy Degree from The University of Manchester Institute of Science and Technology, England. Before joining City University of Hong Kong, Dr. CHEUNG had worked for Water Research Centre in England, Hong Kong Baptist University and Environmental Protection Department of the Hong Kong SAR Government. Dr. CHEUNG currently teaches Environmental Toxicology, Environmental Pollution, Environmental Impact Assessment, Environmental Control and Waste Treatment. Dr. CHEUNG is currently a member of the American Chemical Society.