Table 2.
Concentrations of outdoor air pollutants in villages of Xuanwei and Fuyuan by coal deposit.
| Coal deposit in region | PM2.5 (µg/m3) | BaP (ng/m3) | NAP (ng/m3) | SO2 | NO2 (µg/m3) | PMabs (10–5/m)† | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | AMa | GM (GSD)b | N | AM | GM (GSD) | N | AM | GM (GSD) | N | %Detect | N | AM | GM (GSD) | N | AM | GM (GSD) | |
| Overall | 85 | 53.1 | 45.3 (1.8) | 51 | 11.1 | 9.7 (1.7) | 58 | 1,045.8 | 707.7 (2.4) | 88 | 26.1 | 87 | 97.6 | 91.5 (1.4) | 66 | 5.5 | 5.0 (1.6) |
| Xuanwei | 41 | 58.1 | 51.6 (1.7) | 28 | 12.1 | 10.5 (1.7) | 34 | 1,078.8 | 729.9 (2.3) | 44 | 34.8 | 44 | 97.5 | 93.2 (1.4) | 34 | 6.6 | 6.1 (1.6) |
| 1, 2, 4, 7, 8% | 20 | 56.8 | 47.4 (1.8) | 14 | 12.7 | 10.8 (1.8) | 20 | 1,058.4 | 813.6 (2.2) | 22 | 18.2 | 22 | 101.7 | 97.8 (1.3) | 18 | 6.4 | 5.8 (1.7)c |
| 9% | 4 | 70.1 | 67.9 (1.3) | 4 | 13.7 | 12.0 (1.8) | 4 | 629.0 | 620.0 (1.2) | 4 | 25.0 | 4 | 118.5 | 116.8 (1.2) | 4 | 7.2 | 6.9 (1.4)c |
| 10% | 4 | 59.1 | 57.9 (1.3) | 2 | 19.8 | 19.8 (1.0) | 0 | – | – | 4 | 50.0 | 4 | 113.0 | 107.5 (1.4) | 4 | 7.9 | 7.7 (1.3)c |
| LS*,% | 4 | 49.2 | 47.8 (1.3) | 3 | 6.2 | 6.1 (1.2) | 4 | 2,282.6 | 682.8 (5.3) | 4 | 25.0 | 4 | 85.1 | 83.7 (1.2) | 2 | 5.9 | 5.8 (1.2) |
| Fuyuan | 44 | 48.5 | 40.2 (2.0) | 23 | 9.9 | 8.9 (1.6) | 24 | 999.2 | 677.5 (2.6) | 44 | 34.1 | 43 | 97.7 | 89.7 (1.5) | 32 | 4.2 | 4.0 (1.4) |
| 12, 13, 14, 38% | 10 | 58.8 | 50.8 (1.8) | 8 | 9.2 | 8.7 (1.5) | 8 | 1,272.8 | 1,093.9 (1.9) | 10 | 20.0 | 9 | 88.9 | 87.6 (1.2) | 4 | 7.2 | 6.6 (1.6)c |
| 16, 17, 19% | 22 | 48.5 | 42.1 (1.8) | 13 | 11.0 | 10.1 (1.6) | 9 | 1,276.0 | 827.1 (3.2) | 22 | 27.3 | 22 | 97.5 | 92.0 (1.5) | 18 | 4.9 | 4.7 (1.3) |
| 20, 27**,% | 21 | 48.3 | 39.0 (2.2) | 7 | 8.4 | 7.4(1.7) | 13 | 475.2 | 413.0 (1.7) | 22 | 31.8 | 22 | 92.8 | 81.7 (1.6) | 16 | 3.5 | 3.3 (1.4) |
aAM arithmetic mean; bGM geometric mean, GSD geometric standard deviation; cp < 0.05 when compared with deposit 20, 27 deposits via Tukey HSD test. *LS is located in deposit 27 in Xuanwei; **Deposit 27 is located in Xuanwei; %Deposit numbers refer to the map locations of each coal source shown in Fig. 1. NAP naphthalene, BaP Benzo(a)pyrene, SO2 sulfur dioxide, NO2 nitrogen dioxide; †p < 0.05 among coal deposits via ANOVA test, data were published in reference15.