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Abstract
A computer program which provides retention indices for the entire gas chromatogram has been applied to assist in the identification of components of mixtures using a GC-MS-Computer system. As one example, the identification of drugs and metabolites in body fluids is discussed and it is shown that retention indices, in combination with mass spectral data, allow a most efficient, unambiguous and readily automated identification of components of the relatively complex mixtures which result from the extraction of body fluids.