Table 3.

Summary of the chemical names, IDs, and retention time of all the biomarkers.

Peak ID	Compound Name	Peak ID	Compound Name
1	2-Methylbutane,	54	2,3,6-Trimethylheptane
2	Isoprene	58	2,6-Dimethyl (S,E)-4-octene,
4	1-Cyclopropaneethanol	59	1-Butyl-1-methyl-2-propyl- cyclopropane
5	4-Methyl-1-pentene	60	1-Fluorododecane
6	2-Methylpentane	62	Chloroacetic acid dodecyl ester
7	2-methyl-1-pentene	67	2,5,9-Trimethyldecane
8	n-Hexane	69	2,3,5-Trimethylheptane
28	2,3,4-Trimethylpentane	73	2,4,6-Trimethyldecane
32	2,4-Dimethylheptane	80	2,6,10,14-Tetramethylheptadecane
34	2-Octene	85	2,8-Dimethylundecane
37	2-Methyloctane	86	3,6-Dimethylundecane
50	2,2,4-Trimethylheptane	91	2,6,6-Trimethyldecane
51	3,3-Dimethyloctane	93	5-Methyl-5-propylnonane