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Inorganic Geochemistry Laboratory

Analytical instrumentation in the LLO Inorganic Geochemistry Laboratory includes a Perkin-Elmer Elan-6000 inductively coupled plasma mass spectrometer (ICP-MS), a Dionex ion chromatograph (IC) and a Jobin Yvon Ultima-C inductively coupled plasma Emission Spectrometer (ICP-ES). The laboratory is also equipped with a microwave digestion system for rapid dissolution of sediment and material. These instruments are utilized for studies of distributions of major and trace elements to examine natural geochemical processes in large lakes, as well as the effects of human perturbation on such systems.

The current workhorse for inorganic chemistry at the LLO is the Cox Analytical Systems ITRAX scanner, which has recently been designated by the National Science Foundation as a national research facility. Although designed primarily for X-ray fluorescence chemical analyses on split sediment cores, other samples have been analyzed, including rock cores, U-channel samples of sediment cores, tree ring cores, and in one case, hair from the tail of an elephant.

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