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A common thread of our research has been the use of high-dimensional stable isotope systems to "read" geological, biological, and environmental records, with a special interest in the history of our evolving atmosphere.

The tools that we use include gas-source isotopic ratio mass spectrometry (dual-inlet and conflo), laser-fluorination systems, vacuum lines, GC, IC, ICP-ES, SEM, XRD, and wet- and photo-chemistry lab facilities. OASIC has built up a unique stable isotope laboratory that is specialized in the isotope-ratio measurements of most elements in water-soluble oxy-anions such as sulfate, nitrate, perchlorate, phosphate, and hydroxide. OASIC is capable of chemical preparation and measurement of δD, δ15N, δ18O, δ17O, δ34S, δ33S, and δ36S values of SO42-, NO3-, ClO4-, and PO43-with the best precisions in the community.