Table 6.
Nonparametric test applied in the comparison of photo-oxidation processes applied in the standard solution of PAHs and in crude oil.
| Reference solution |
Aromatic fraction |
|||||
|---|---|---|---|---|---|---|
| ∗Df | Chi-square | p-value | ∗Df | Chi-square | p-value | |
| Crude oil | 2 | 14.18 | 0.0008 | 2 | 4.03 | 0.133 |
| Photo catalysis | 2 | 14.18 | 2 | 4.03 | ||
| Photolysis | 2 | 14.18 | 2 | 4.03 | ||
Df = degree of freedom.