• B.Sc. (Special) Honours in Environmental Conservation and Management, University of Kelaniya, Sri Lanka

• M.Sc. in Environmental Toxicology, Chulabhorn Graduate Institute, Thailand

• Environmental and ecotoxicology of metals, pesticides and emerging contaminants

• Water quality and bio-monitoring of environmental contamination using fish and aquatic invertebrates

• Samarakoon, H. M. T. R. and Pathiratne, A., (2017). Survival and cholinesterase activity of Asian common toad (Duttaphrynus melanostictus) tadpoles following short term exposure to a carbosulfan-based pesticide. Sri Lanka Journal of Aquatic Sciences, 22(1).

• Samarakoon, H. M. T. R., Navasumrit, P., Promvijit, J., Chaisatra, K. and Ruchirawat, M. (2018). Evaluation of exposure to heavy metals and determination of oxidative/nitrative DNA damages in a population residing in a high incidence area of cholangiocarcinoma. Proceedings of the Conference on Environmental Health and Toxicology, Bangkok, Thailand.
• Samarakoon, H. M. T. R. and Pathiratne, A. (2014). Cholinesterase inhibition and recovery in tadpoles of Asian common toad (Duttaphrynus melanostictus) following exposure to a carbosulfan based pesticide. Proceedings of the 34^th Annual Sessions of Institute of Biology, Colombo, Sri Lanka.
• Samarakoon, H. M. T. R. and Pathiratne, A. (2014). Survival and growth of Asian common toad (Duttaphrynus melanostictus) tadpoles following exposure to mixtures of carbosulfan and nitrate. Proceedings of the 34^th Annual Sessions of Institute of Biology, Colombo, Sri Lanka.