Frank got his PhD in Environmental Engineering from the Swiss Federal Institute of Aquatic Science and Technology (Eawag) in Zurich, Switzerland. His research interests are on water chemistry and on DOM photochemistry with current research projects focused on the photoaging of secondary volatile aerosols and on the influence of ozonation on the photochemical properties of DOM. Through his research, he hopes to improve the understanding on the fate of aerosols particles in the atmosphere and help to assess the impact of ozonation on the drinking water chemistry.