The Lindqvist group has been dedicated to research on mercury in environmental and industrial applications during 25 years (7 Ph. D. graduates, over 100 papers in internationally peer-reviewed journals). The group has been a partner in several international joint-research projects and inter-calibrations.In recent years, main foci have been on the cycling of mercury in air and water including laboratory studies of chemical transformation processes. In the recent period have contributed to the following projects: