Table 5 Volatile organic compounds detectable in inhaled and exhaled gas, derived patient-to-inspired gas ratios and corresponding classification into unaffected volatiles (patient-to-inspired gas ratio 0.5–1.5), and expired volatiles (patient-to-inspired gas ratio > 1.5)
IMS-Peak | Volatile Organic Compound | Patient-to-Inspired Gas Ratio | Classification | Retention Time | Drift Time |
|---|---|---|---|---|---|
P74 | Unknown | 0.8 | unaffected | 41.5 | 0.697 |
P67 | Unknown | 1.1 | unaffected | 17.8 | 0.506 |
P51 | Unknown | 1.7 | expired | 38.7 | 0.497 |
P66 | Unknown | 1.9 | expired | 21.5 | 0.506 |
P32 | Methanol | 2.3 | expired | 0.0 | 0.478 |
P50 | Unknown | 2.5 | expired | 20.3 | 0.496 |
P36 | 2-Methylpentane | 2.6 | expired | 9.1 | 0.510 |
P72 | Unknown | 5.0 | expired | 42.8 | 0.701 |
P35 | 2-Methylfurane | 6.7 | expired | 4.8 | 0.540 |
P15 | Dimethyl disulphide monomer | 8.8 | expired | 8.0 | 0.498 |
P1 | Acetone monomer | 11.8 | expired | 3.0 | 0.498 |