204 

 Further use of tandem mass spectrometry for compound identification 



necessitated the compilation of a library of daughter spectra from CI produced 



parent ions of standard compounds. The library provided the trends for compound 



class screening used in the following section. The examples chosen for inclusion in 



this dissertation were straightforward with respect to identifying the compound 



present. In most cases, the identification of the compound present is not as 



straightforward; rather, the information obtained from screening proves most useful 



for identifying compound classes present. The complexity of the skin emanation 



samples, combined with the desire to identify unexpected (rather than targeted) 



compounds prompted further studies to emphasize GC/MS analyses, as summarized 



in Chapter 5. 



