271 

 comparative study are presented in figure 5-2. The top trace, produced from beads 

 handled by Mr. Schreck contains, for the most part, the same peaks as that of Mr. 

 Smith (bottom trace). The glycerol peak, located at a retention time of 

 approximately 18.8 min, is not only chromatographed better on the FFAP column 

 employed here (versus the HP5 column used in figure 5-1), but it is present in much 

 greater amount in Mr. Smith's sample. As mentioned earlier, this discrepancy is due 

 to residual glycerol on the hands from the Sta-Sof-Fro~ hair and scalp spray. 



Peak heights were measured and normalized to the peak height of 

 tetradecane. The relative peak height ratios of component peaks were then 

 compared to determine specific components which were increased in one subject 

 compared to the other. Sample analyses were also compared with respect to 

 amounts of components present on the glass beads analyzed immediately and on 

 glass beads which were analyzed 6-8 hours later. The results of these comparative 

 studies are presented in table 5-4. 



This table contains only two remark codes. A code of (A) denotes 

 compounds for which the exact structure is not known versus other isomers of the 

 same compound. A remark code of (B) denotes that discussion of this compound 

 is found in the following text. 



The designation of significantly or slightly combined with increased or 

 decreased employed in the table merits some explanation. It was found that the 

 relative abundances of present components in each sample vary between analyses. 



