Activities
Studies of the composition and origin of dissolved organic matter (DOM, humic substances) in seawater and other natural waters using advanced analytical and spectroscopic techniques.
Spectral and chemical characterization of light-absorbing species (i.e., chromophores) in natural waters.
• The impact of photochemical processes on estuarine, oceanic and global carbon cycling. These processes include CO2 and CO photochemical production, photochemical flocculation, and the effects photo-degradation products on DOM microbial growth and respiration.
Photo-production pathways and fate of free radicals (e.g., OH radicals) and stable species (e.g., CO2, CO, formic acid, formaldehyde, H2O2, and photo-reduced trace metals).
The development/adaptation of analytical techniques for trace organic compounds, total and dissolved organic carbon, and photo-chemically formed species in natural waters
Skills
Chromatography, photochemistry, UV-visible spectroscopy, fluorescence spectroscopy, trace analysis