Table 3. Personal and Indoor PM2.5 (μg/m3) Concentrations from Smoky Coal Burning Homes from Xuanwei and Fuyuan, by Coal Source.
personal |
indoor |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
county | smoky coal subtype | coal mine | Na | AMb | GMb | GSDb | N | AM | GM | GSD |
Xuanwei | coking coal | 119 | 189 | 153 | 2.0 | 122 | 196 | 149 | 2.0 | |
Azhi | 34 | 227 | 181 | 1.9 | 33 | 186 | 160 | 1.7 | ||
Baoshan | 12 | 210 | 168 | 2.2 | 12 | 246 | 193 | 2.1 | ||
Laibin | 28 | 153 | 132 | 2.1 | 30 | 220 | 152 | 2.2 | ||
Tangtang | 31 | 194 | 152 | 2.0 | 33 | 191 | 133 | 2.3 | ||
Yangchang | 14 | 142 | 125 | 1.6 | 14 | 135 | 124 | 1.5 | ||
Fuyuan | overall | 80 | 168 | 142c | 1.8 | 88 | 169 | 138c | 1.9 | |
coking coal | 23 | 213 | 175d | 1.9 | 27 | 188 | 154d | 1.9 | ||
Daping | 9 | 111 | 104 | 1.5 | 10 | 87 | 83 | 1.4 | ||
Enhong | 9 | 241 | 208 | 1.8 | 11 | 250 | 222 | 1.7 | ||
Haidan | 5 | 348 | 329 | 1.4 | 6 | 242 | 221 | 1.7 | ||
1/3 coking coal | 13 | 183 | 165d | 1.6 | 12 | 271 | 245 | 1.7 | ||
Bagong | 10 | 207 | 194 | 1.4 | 9 | 274 | 262 | 1.4 | ||
Dahe | 3 | 104 | 96 | 1.6 | 3 | 263 | 200 | 2.8 | ||
gas fat coal | 40 | 135 | 120d | 1.6 | 39 | 117 | 107d | 1.6 | ||
Housuo | 38 | 130 | 116 | 1.6 | 37 | 111 | 102 | 1.5 | ||
Qingyun | 2 | 237 | 237 | 1.0 | 2 | 236 | 235 | 1.1 | ||
meager lean coal | Gumu | 4 | 138 | 96 | 2.8 | 4 | 196 | 149 | 2.0 |
Number of measurements is from households which exclusively burn smoky coal and report a coal source consistent with reported coal type.
AM = Arithmetic Mean, GM = Geometric Mean, GSD = Geometric Standard Deviation.
Significant (p < 0.05) variation between smoky coal subtypes sourced in Fuyuan via ANOVA test.
Significant (p < 0.05) variation between coal mines within identified smoky coal subtype via ANOVA test.