Table 4.

Profiles of different activities (see complete a volatile organic compound list in Supplementary Materials, Figure S1).

Compound/Activity	Gasoline	Exhaust Gasoline	Diesel	Exhaust Diesel	Urban Traffic	Petrol Pump	Waste Landfill	Leachate	Station 16	Station 17	Station 18	Station 19	Station 19 During Fire	Waste Dump Fire	Fire Plastic	Citrus Processing	Coffee Production	Food Street Laboratory	Food Street Laboratory
1,2,4-trimethylbenzene			x		x	x												x
2 methyl propene																	x
2-methyl-2-butene	x	x
2-methylfuran														x
2-methylpentane	x	x			x
2-methylpentene
3-methylhexane
acetone						x		x	x		x						x
acroleine																		x
benzaldehyde													x	x
benzene	x	x	x	x	x	x						x	x	x	x		x
butane					x	x								x				x
cyclooctatetraene
cyclopentene			x	x			x
decane
decene														x	x
dichloromethane						x		x	x	x	x	x	x
ethanol										x	x	x	x					x
ethylbenzene					x	x								x	x		x
furan														x	x
heptane
hexane			x	x	x	x	x	x	x	x	x	x	x		x
indene													x
isopentane			x	x	x				x			x	x
limonene										x				x
m,p-xylene	x	x	x	x	x	x	x	x	x			x	x				x	x
methyl cyclohexane
Methyl furan													x		x
methyl methacrylate													x
naphthalene
nitromethane				x					x
nonane
octane
p-cymene								x			x					x
pentane	x	x
propane															x		x	x
styrene													x		x
toluene				x	x	x			x	x	x	x	x	x	x		x	x
undecene													x
α pinene																x
β-pinene																x
γ-terpinene																x

X = Analyte present in the sample.