Dr. Sazal Kumar is an environmental scientist specializing in environmental chemistry, ecotoxicology, and metabolomics. He received his PhD in Environmental Science from the University of Newcastle, Australia, following a Master of Natural Science in Marine Geology from the University of Chinese Academy of Sciences, China, and an MSc in Applied Chemistry and Chemical Engineering from Islamic University, Bangladesh. His research focuses on the environmental fate and biological effects of legacy and emerging contaminants, particularly endocrine-disrupting chemicals and microplastics in aquatic ecosystems, using NMR-based metabolomics. Dr. Kumar has authored over 45 peer-reviewed publications, which have received more than 1,200 citations (h-index: 20). He has worked as a Research Assistant at the University of Newcastle on ARC Linkage and industry-funded projects in collaboration with Hunter Water and NSW DPI Fisheries. He is a member of the Society of Environmental Toxicology and Chemistry (SETAC). His contributions to environmental toxicology were recognized with the 2025 SETAC AU Best Publication Award.