Table 1.

Volatile organic compounds (VOCS) FOUND CONSISTENTLY IN THE HEADSPACE OF HUMAN CERUMEN SAMPLES AS DETECTED BY SOLID-PHASE MICROEXTRACTION GC/MS TECHNIQUES^a

RT	Compound	Major ion	Comparison across ethnicities (P-values)b
11.94	6-methyl-5-heptene-2-one	43	0.741
14.86	acetic acid	60	0.004
16.69	propanoic acid	74	0.054
17.25	isobutyric acid	43	0.033
18.48	butyric acid	60	0.002
19.28	2-methylbutanoic acid	74	0.006
19.28	isovaleric acid	60	0.004
20.59	valeric acid	60	0.001
22.45	trans-geranylacetone	151	0.485
22.61	hexanoic acid	60	0.001
23.66	dimethylsulfone	79	0.002
24.42	heptanoic acid	60	0.026
25.34	phenol	94	0.695
26.21	octanoic acid	60	0.958

RT = retention time.

^aFor a complete list of compounds identified see ref (Prokop-Prigge et al. 2014); however, the presence of many of these compounds were erratic across all subjects.

^bKruskal-Wallis test