Figure 2. Log plot of relative headspace concentration of α-pinene, as measured by integrated peak area vs. time, for nanoporous organosilica (□), natural sponge (•) and glass beads (◊))

The amount of α-pinene was measured in the headspace over time for rose extracted loaded into the nanoporous organosilica, as compared to glass beads and natural sponge (see Figure 2).