Activities performed by the C&N research group have a cross disciplinary character combining studies on the interplay of marine chemistry with physics and biology, and mechanisms controlling the geochemical cycling of elements in the ocean. Research efforts include the progressive development of state-of-the-art analytical techniques for solute determination, and analytical tools for bacterial identification and functional characterization.

Marine research within C&N is focused on the structure and function of marine systems, and includes laboratory and field studies in water column and sediment environments. Particular emphasis is given to biogeochemical transformations and fluxes of elements across redox and phase boundaries under a variety of environmental conditions.  Our goal is to develop a quantitative understanding of chemical processes relevant to the cycles of carbon and nitrogen.  Important aspects of present-day research include the role of CO₂ and NO_x in modulating climate, and the quantitative and qualitative importance of alternative routes (e.g. anammox) during N cycling.

Analytical research within C&N combines fundamental chemical principles with the development of analytical techniques, often applied in marine environments. Recent studies include e.g. high-precision determination of the seawater inorganic carbon system, and high-resolution optical sensors (1- and 2-dimensional) for solute quantification in complex environments.