Table 4.
Daily averaged emission reductions of SO2, NOx, PM2.5, PM10, and VOCs in the Beijing-Tianjin-Hebei region.
| Airborne pollutants | SO2 | NOx | PM10 | PM2.5 | VOCs | ||
|---|---|---|---|---|---|---|---|
| Beijing | Red alert | reduction emission/t | 15 | 182 | 454 | 45 | 200 |
| reduction rate/% | 14 | 32 | 67 | 25 | 29 | ||
| Orange alert | reduction emission/t | 14 | 118 | 381 | 32 | 142 | |
| reduction rate/% | 13 | 21 | 57 | 18 | 21 | ||
| Tianjin | Red alert | reduction emission/t | 80 | 220 | 180 | 79 | 337 |
| reduction rate/% | 12 | 21 | 28 | 25 | 26 | ||
| Orange alert | reduction emission/t | 44 | 37 | 139 | 59 | 210 | |
| reduction rate/% | 7 | 4 | 21 | 18 | 16 | ||
| Hebei | Red alert | reduction emission/t | 665 | 1831 | 1378 | 735 | 1767 |
| reduction rate/% | 22 | 37 | 28 | 28 | 28 | ||
| Orange alert | reduction emission/t | 442 | 1300 | 1026 | 534 | 1310 | |
| reduction rate/% | 14 | 27 | 21 | 20 | 21 | ||