Microorganisms interact with their environment as they produce and and consume dissolved compounds that will therefore become depleted or enriched in their surrounding, mainly in the pore water. Analysis of dissolved compounds is therefore a prerequisite for understanding microbial activity in geologic settings. Another major focus of our work in on direct detection of microbial turnover via the use of radioisotopes as those offer unsurpassed sensitivity. As microbial abundance and activity …

In the laboratory for fluid chemistry, various devices are used to determine the chemical properties of geothermal fluids.

The Environmental Mineralogy and Biogeochemistry Labs are equipped with a very diverse suite of spectroscopic and scattering instruments to determine material chemical composition, structure, surface area and grain size of both synthetic and natural samples. For instance,

• Our powder X-ray diffractometer (XRD) consists of two individual instruments capable of X-ray scattering analysis using both Cu (λ=1.54 Å) and Ag radiation (λ=0.56 Å) in transmission geometry. XRD can be used to analyze …