**About the Editors**

#### **Dmitry Vlasov**

Dmitry Vlasov is a senior researcher at the Department of Landscape Geochemistry and Soil Geography, Faculty of Geography, Lomonosov Moscow State University. His research interests lie in the areas of environmental geochemistry, aerosol and precipitation chemistry, road dust and other urban environments' interactions, and sustainable development. He has authored more than 80 publications in Russian and English and has served as an executor of more than 20 scientific projects funded by the Russian Science Foundation, Russian Foundation for Basic Research, Russian Geographical Society. He teaches courses in Lomonosov Moscow State University and its branch in Nur-Sultan (Kazakhstan), and in Shenzhen MSU-BIT University (China): urban geochemistry, environmental chemistry, aerosol and road dust geochemistry, soil science. He enjoys working with students to develop new approaches to assessing geochemical interactions and the pollution of urban environments.

#### **Omar Ramírez**

Omar Ramírez is a professor and researcher at the Environmental Engineering Program, Faculty of Engineering, Universidad Militar Nueva Granada in Colombia. He has a Ph.D. in Industrial and Environmental Science and Technology and several publications in international scientific journals. His research areas are air quality and atmospheric pollution, particularly physicochemical characterization of particulate matter, application of receptor models, aerosol geochemistry, identification of road dust components, health risk analysis, and urban pollution.

#### **Ashok Luhar**

Ashok Luhar is a principal research scientist at the Oceans and Atmosphere business unit of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia, and leads a research team in aerosol and chemistry modelling. His research interests include atmospheric flow, transport and air quality modelling, ranging from local to global scales and covering problems from air quality to climate change. He has authored several scientific papers, edited books and has been on the editorial board of international journals including *Atmospheric Environment*, *Journal of Air and Waste Management Association*, and *Atmosphere*.
