Table 3 Peak intensities and corresponding concentration [ppb] of selected volatile organic compounds
Volatile Organic Compound | Patient | Inspiration | O2 | Compressed Air | O2 Cylinder | Room Air | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
mV | ppb | mV | ppb | mV | ppb | mV | ppb | mV | ppb | mV | ppb | |
Acetone | 345 (242–448) | 9.9 (7.7–12.3) | 6 (4.8–7.3) | 3.6 (3.6–3.6) |  |  |  |  | 10 (6.8–13.2) | 3.7 (3.6–3.7) | 24.2 (21.2–27.2) | 3.9 (3.8–3.9) |
Cyclohexanone | 183 (167–199) | 6.4 (5.6–7.3) |  |  |  |  |  |  |  |  | 9.7 (9.3–10.1) | 0.3 (0.2–0,3) |
Dimethyl disulphide | 103 (82–125) | 69 (57–82) | 10 (8.7–11.3) | 17.5 (16.8–18.1) | 34.2 (32.8–35.6) | 30.4 (29.6–31.1) | 8.8 (7.5–10) | 16.9 (16.2–17.5) | 18.3 (16.2–20.4) | 21.9 (20.8–23) | 69.8 (66.3–73.3) | 49.9 (48–51.9) |
3-Hydroxy-2-Butanone | 66.8 (43.7–89.9) | < 0.01 ppb |  |  |  |  |  |  | 1.9 (1.5–2.2) | < 0.01 ppb | 86.6 (76.6–96.6) | < 0.01 ppb |
2-Methylfuran | 26.2 (15.3–37.1) | < 0.01 ppb | 3.9 (3.5–4.4) | < 0.01 ppb |  |  |  |  | 3.4 (2.3–4.5) | < 0.01 ppb | 13.8 (11.9–15.7) | < 0.01 ppb |
2-Methylpentane | 15.3 (10.4–20.2) | 0.9 (0.1–1.8) | 6 (5.2–6.8) | < 0.01 ppb |  |  |  |  | 51.3 (29.2–73.4) | 7.5 (3.4–12.1) | 27.8 (24.1–31.5) | 3.1 (2.5–3.8) |
3-Pentanone | 272 (207–338) | < 0.01 ppb |  |  |  |  |  |  |  |  | 46.7 (42.7–50.7) | < 0.01 ppb |