Professor Tao’s research has centred on the emission, environmental behaviour, fate, and effects of trace toxic pollutants, with particular emphasis on global pollutant emission inventories, pollutant transport and exposure modelling, and emissions from rural household sources and their effects on indoor and outdoor air quality and human health. Through national research programmes and international scientific collaboration, he has contributed to research on the global cycling, environmental transport, and human exposure risks of persistent organic pollutants, mercury, and polycyclic aromatic hydrocarbons. He has authored more than 200 peer-reviewed publications as first or corresponding author in international journals, with more than 20,000 citations indexed by the Web of Science and an h-index of 80. His research has also contributed to the development of quantitative approaches for assessing pollutant emissions, environmental exposure, and associated health risks. Through sustained research, leadership of national research programmes, and international academic collaboration, Professor Tao has contributed to connecting fundamental research in environmental chemistry and pollutant fate with practical applications in pollution control, environmental health risk assessment, and sustainable development.