Table 2. The comparison of VOCs peak area in the headspace of cancer group (JEOK cells), control group (human lymphocytes cells), and medium control (blank group).
| Compounds | Mean peak area | F/χ2 | P value | ||
|---|---|---|---|---|---|
| Cancer group | Control group | Blank group | |||
| Dimethyl sulfide | 9.3692 × 107 ± 1.6314 × 107 | 0 | 0 | 21.807 | 0 |
| Ethanol | 1.0559 × 107 ± 6.3185 × 106 | 7.1689 × 107 ± 1.9445 × 107 | 1.1453 × 108 ± 4.5842 × 107 | 16.485 | 0 |
| 2,4-Dimethylheptane | 2.2786 × 108 ± 9.4153 × 107 | 1.5770 × 108 ± 5.9798 × 107 | 0 | 19.017 | 0 |
| Methylbeneze | 2.3378 × 108 ± 9.4232 × 107 | 1.4177 × 108 ± 5.2523 × 107 | 9.8781 × 107 ± 7.3435 × 107 | 6.703 | 0.006 |
| Hexanal | 3.8350 × 106 ± 1.0229 × 106 | 8.3013 × 106 ± 1.2044 × 106 | 8.0023 × 106 ± 3.1005 × 106 | 12.355 | 0 |
| o-Xylene | 2.4996 × 107 ± 1.1601 × 107 | 1.4143 × 107 ± 2.7087 × 106 | 1.0588 × 107 ± 2.6105 × 106 | 13.02 | 0.001 |
| Dodecane | 1.0388 × 108 ± 3.1960 × 107 | 3.9058 × 107 ± 1.2287 × 107 | 3.3822 × 107 ± 1.0727 × 107 | 15.605 | 0 |
| 1,3-Di-tert-butylbenzene | 2.2445 × 108 ± 3.7074 × 107 | 1.3091 × 108 ± 5.2283 × 107 | 1.0075 × 108 ± 5.1086 × 107 | 15.315 | 0 |
| Benzaldehyde | 2.7386 × 107 ± 1.2392 × 107 | 5.1230 × 107 ± 1.2347 × 107 | 7.3170 × 107 ± 1.0903 × 107 | 29.617 | 0 |
The results were expressed as the mean ± SD. One-way analysis of variance (ANOVA) or the Wilcoxon/Kruskal–Wallis to compare the normalized ionic peak area of gas emitted from three groups.