7.5  Analytical Experiments without an External Reference Standard; Conformational Identification without Quantification.

         One of the most powerful applications of an MS system is its ability to identify an analyte without a reference compound.  In GC (with other non-conclusive detectors), reference compounds are needed to determine the retention time, the criteria for identification in GC.  In MS, the spectrum is the identifier since it can be compared to thousands of reference spectra and a unique match is normally achieved.  The laboratory exercises below illustrate the power of MS in identifying unknown analytes in a variety of samples.

 

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Section 7.5.1

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