Laboratory for ChemoMetrics, Vienna (Austria) COSIMA

Some Results

COSIMA is a mass spectrometer (TOF-SIMS type) dedicated to collect and analyze dust particles near the comet Wirtanen during the ESA space mission ROSETTA. Principal aim of the project MS-Chemometrics-COSIMA is the development of chemometric methods for the interpretation of data which are expected from organic compounds in cometary material.

Because the COSIMA instrument is still in a testing state a set of reference compounds were measured by the method PDMS which gives similar mass spectra like SIMS.

Principal topics of chemometrics work are:

l appropriate transformation of mass spectral data,

l exploratory data analysis of spectra-structure relationships,

l classification of substance classes,

l spectral similarity that reflects structural similarity.

Select one of the topics

PDMS-SIMS comparison

CHEMOMETRICS

Software Simulation of TOF-SIMS

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Last update 2000-12-04