288 

 work appear, for the most part, to be similar with respect to composition of 

 emanations present on the skin. The components present vary in relative abundance 

 among subjects. This was the basis for the comparison studies conducted in this 

 chapter. Components found increased or deceased between hosts are reported in 

 this dissertation. Additional studies involved the comparison of GC/MS results to 

 bio-assay results; compounds observed to increase or decrease between days were 

 reported. The findings from these case comparison studies may not provide the 

 ultimate answer to solving the problem of mosquito attraction; however, the work 

 contained herein should bring the solution closer. 



Future Work 



Continued use of a single-stage cryo-focusing or single cryo-focusing trap may 

 be beneficial when combined with the use of Tedlar bags described for purge and 

 trap analyses. Although the preferential discrimination of samples which do not 

 transfer and subsequently volatilize from glass is lost, preliminary work comparing 

 the observed components from glass beads and from the hand enclosed in a Tedlar 

 bag show that the presence of components is very similar. Additional studies need 

 to be conducted to verify this. Continued use of a cryo-focusing GC/MS could be 

 conducted with less steep ramp programs and longer columns. This would effect 

 better separation of components which co-eluted during analyses in this work. The 



