VOC concentrations in the belly space were measured during four sampling events. Adjusted belly concentrations were compared to average adjusted indoor concentrations (Table 3). Here the fractional differences were positive for all compounds. For a number of VOCs, these differences were substantial (2-butanone, less volatile aldehydes, alkane hyrdrocarbons, and aromatic hydrocarbons except styrene). Although not quantified, the C3 to C4 alkyl substituted benzene isomers also were, from visual inspection of the total-ion-current chromatograms, elevated in the belly space relative to indoors. Note that the belly space is a complex space with some compartmentalization from structural.
