Simultaneous chemical and sensory analysis of volatiles emitted into headspace, through a duffel bag, and captured by SPME over 68 h.

<p>Total ion chromatogram (black) and aromagram, (red, inverted) of VOC emitted from marijuana in a duffel bag. An 85 μm Carboxen/PDMS SPME fiber was exposed to headspace over the duffel bag, within an overturned glass jar to capture emitted volatiles for 68 h (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144160#pone.0144160.s002" target="_blank">S2 Fig</a>). A total of 53 aroma events and 178 compounds were recorded (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144160#pone.0144160.s013" target="_blank">S8 Table</a>). Aroma events # 12, 15, 46, and 51 were recorded as a ‘characteristic’ smell (i.e. (*) the aromas that most represent the overall aroma of marijuana). Outlined boxes signify (A) big chemical peak detected, smell detected; (B) chemical peak detected, no smell detected; (C) Small or no chemical peak detected, smell detected. Zoomed boxes A, B, and C identify chemical peaks and aromas.