From: Airport capacity evaluation based on air traffic activities big data
 | NOx | CO | HC | PM10 | |
---|---|---|---|---|---|
Air | Annual | 50 μg/m3 | 2 mg/m3 | 200 μg/m3 | 70 μg/m3 |
Daily | 100 μg/m3 | 4 mg/m3 | 2000 μg/m3 | 150 μg/m3 | |
Hourly | 250 μg/m3 | 10 mg/m3 |  |  | |
Noise | Zone 1 | Zone 2 | Â | Â | Â |
 ≤ 70 dB |  ≤ 75 dB |  |  |  |