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7.3.8 Extracting Spectra from the Library

The library can also be searched to retrieve spectra that satisfy various parameters. From the Spectrum Menu in the Data Analysis Module, select Parametric Retrieval. Practice retrieving spectra using this feature. For example, you might search for all compounds with a molecular mass between 108 and 112. Or, you might search for all compounds with the base peak (the largest peak in the mass spectrum, displayed as 100% Relative Intensity) of m/z 109.

Note: There are multiple libraries on the data system. For this exercise, use nbs75k.l.

John S. Riley, DSB Scientific Consulting