Dot plot reporting shift in rank of volatiles emitted from marijuana by surrogate concentration vs. calculated OAV.

<p>Markers represent VOC emitted from all marijuana samples and extracted from headspace by SPME over 68 h at room temperature. Compounds are ranked by surrogate concentration vs. calculated OAV using standardized ODT in air from Devos, et al. (1990) [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144160#pone.0144160.ref035" target="_blank">35</a>]. Data representing bagged and loose marijuana sampled for 68 h are similar to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144160#pone.0144160.s005" target="_blank">S5 Fig</a>. Rank value (horizontal-axis) of 1 indicates low surrogate concentration or low OAV; rank of 60 indicates high surrogate concentration or high OAV. The general trend is a shift in rank between surrogate concentration and odor activity value. Nerol has a rank of 6 by surrogate concentration and has a rank of 51 by OAV (bottom red box); α-pinene has a rank of 49 by surrogate concentration and has a rank of 25 by OAV (top red box). Values of rank for each VOC are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0144160#pone.0144160.s011" target="_blank">S6 Table</a>. Compounds in the black box highlight VOC that were detected in fresh marijuana and permeated through a duffel bag, not detected or permeated in desiccated marijuana.