特征比值 | 昼间 | 夜间 | 平均值 |
Ant/(Ant + Phe) | 0.06 ± 0.02 | 0.06 ± 0.02 | 0.06 ± 0.01 |
Flu/(Flu + Pyr) | 0.55 ± 0.01 | 0.56 ± 0.09 | 0.56 ± 0.06 |
BaA/(BaA + Chry) | 0.55 ± 0.03 | 0.60 ± 0.02 | 0.58 ± 0.04 |
IP/(IP + BghiP) | 0.39 ± 0.02 | 0.39 ± 0.01 | 0.39 ± 0.02 |
BaA/BaP | 1.66 ± 0.17 | 1.77 ± 0.13 | 1.72 ± 0.16 |
BbF/BkF | 8.51 ± 0.53 | 8.88 ± 0.85 | 8.69 ± 0.71 |
BaP/BghiP | 0.70 ± 0.14 | 0.73 ± 0.06 | 0.71 ± 0.11 |
BghiP/IP | 1.54 ± 0.15 | 1.57 ± 0.07 | 1.55 ± 0.11 |