Table 4.

Retention times for eight compounds measured with seven different MCC-IMS given as mean(s) and relative standard deviation (RSD) before and after alignment

Substance	Replicates (n)	Mean t R measured (s)	t R measured RSD (%)	Mean t R aligned (s)	t R aligned RSD (%)
2-Hexanone	84	6.23	27.9	7.26	27.7
2-Heptanone	86	11.16	22.4	12.87	20.4
2-Octanol	86	23.83	21.1	27.23	9.4
d-Limonene	75	26.2	21.1	29.55	9
1-Octanol	85	41.95	21.7	47.73	3.5
2-Nonanone	86	45.12	21.9	51.3	Used for alignment
1-Decanol	69	225.25	19.7	271.81	5.7
2-Undecanol	60	305.51	21.9	338.25	4.3

2-Nonanone was used as the alignment substance.