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 to mosquitoes. Again these compounds, as well as other compounds should be 

 referred to as good candidates for attractants. In general, the comparison study 

 conducted here, involving the same subject on consecutive days, showed less overall 

 variation (compared to the previous study with different subjects) in relative 

 abundances of sample components present. 



Conclusions 



Identified Emanations 



Approximately 310 compounds were detected in cryo- focused GC/MS analyses 

 and 200 compounds from purge and trap GC/MS experiments. The components 

 present on the skin were found to be very similar among subjects; however, relative 

 abundances of components vary whether comparing two different subjects, or the 

 same subject at different times. Cryo-focused GC/MS analysis allowed for 

 identification of a wide range of classes whereas microscale purge and trap 

 discriminated against polar compounds, giving slightly different information as a 

 result. 



GC/MS Assay of Subjects with Different Attraction Levels 



There were 46 compounds which were increased in relative abundance in the 

 more attractive host to mosquitoes. Only 9 compounds were found (with reasonable 

 certainty) to be relatively more abundant in the lesser attractive of the hosts. Among 



