Table 5.
The analysis of the variance of the main factors on the respective peak area of headspace volatile odors in simulated water samples.
| Sourcea | 2-MIB | GSM | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| dfb | SUMc | MSd | F-value | Significant | df | SUM | MS | F-value | Significant | |
| A | 3 | 7.90979 | 2.63659 | 100.8 | ∗∗ | 3 | 194.85201 | 64.95067 | 56.1 | ∗∗ |
| B | 3 | 6.59627 | 2.19875 | 84.1 | ∗∗ | 3 | 108.42397 | 36.14132 | 31.2 | ∗∗ |
| C | 3 | 0.77847 | 0.25949 | 9.9 | ∗ | 3 | 11.25019 | 3.75006 | 3.2 | |
| D | 3 | 0.27097 | 0.09032 | 3.45 | 3 | 1.40387 | 0.46795 | 0.4 | ||
| E | 3 | 1.22373 | 0.40791 | 15.6 | ∗∗ | 3 | 5.32751 | 1.77583 | 1.5 | |
| F | 3 | 0.19630 | 0.06543 | 2.50 | 3 | 7.39079 | 2.46359 | 2.1 | ||
| G | 3 | 0.06370 | 0.02123 | 0.81 | 3 | 0.69210 | 0.23070 | 0.2 | ||
| Error | 10 | 0.26148 | 0.02614 | 10 | 11.56231 | 1.15623 | ||||
∗ and ∗∗: significant at P ≤ 0.01 and P ≤ 0.001, respectively. aSource A: extraction temperature (°C); Source B: extraction time (min); Source C: rotate-speed (rpm); Source D: ionic strength (w/v, %); Source E: desorption time (min); Source F: desorption temperature (°C); and Source G: solution pH. bDegree of freedom; csum of square; and dmean of square.