US National Ambient Air Quality Standards Pollutant Averaging time Primary(μg/m3) Secondary(μg/m3) S02 Annual arithmetic mean 80(0.03ppm) 24hr 365(0.14ppm) PM10 Annual 50* 24hr 150 PM2s* Annual 15* 24hr 65* CO 8hr 10(mg/m3) 1hr 40(mg/m3,35ppm) HCs 3hr 160(0.24ppm) (corrected for methane) NO Annual 100(0.05ppm) Pb 3 months 1.5 03 8hr 80*
Pollutant Averaging time Primary (g/m3 ) Secondary(g/m3 ) SO2 Annual arithmetic mean 80 (0.03 ppm) 24 hr 365 (0.14 ppm) PM10 Annual 50* 24 hr 150 PM2.5 * Annual 15* 24 hr 65* CO 8 hr 10(mg/m3 ) 1 hr 40 (mg/m3 , 35 ppm) HCs (corrected for methane) 3 hr 160 (0.24 ppm) NOx Annual 100 (0.05 ppm) Pb 3 months 1.5 O3 8 hr 80* US National Ambient Air Quality Standards
China National Ambient Air Quality Standards(GB 3095-1996) Pollutant Average period Concentration First class Second class Third class Unit annually 0.02 0.06 0.10 Sulfur dioxide SO, daily 0.05 0.15 0.25 hourly 0.15 0.50 0.70 Total suspended annually 0.08 0.20 0.30 particulates TSP daily 0.12 0.30 0.50 Respirable annually 0.04 0.10 0.15 particulates PMo daily 0.05 0.15 0.25 annually 0.05 0.05 0.10 Nitrogen oxides daily 0.10 0.10 0.15 mg/m3 NOx (Standard state) hourly 0.15 0.15 0.30 0.04 0.08 Nitrogen dioxide annually 0.04 daily 0.08 0.08 0.12 NO2 hourly 0.12 0.12 0.24 Carbon oxide CO daily 4.00 4.00 6.00 hourly 10.00 10.00 20.00 Ozone O3 hourly 0.12 0.16 0.20 Lead Pb seasonally 1.50 annually 1.00 苯并[a芘B[aP daily 0.01 ug/m3 (Standard state) daily 70 Fluorides hourly 200 1.8② F monthly 3.03 Plant growing seas. 1.22 2.0③ ug/(dm2-d)
Pollutant Average period Concentration First class Second class Third class Unit Sulfur dioxide SO2 annually daily hourly 0.02 0.05 0.15 0.06 0.15 0.50 0.10 0.25 0.70 Total suspended particulates TSP annually daily 0.08 0.12 0.20 0.30 0.30 0.50 Respirable particulates PM10 annually daily 0.04 0.05 0.10 0.15 0.15 0.25 Nitrogen oxides NOx annually daily hourly 0.05 0.10 0.15 0.05 0.10 0.15 0.10 0.15 0.30 mg/m3 (Standard state) Nitrogen dioxide NO2 annually daily hourly 0.04 0.08 0.12 0.04 0.08 0.12 0.08 0.12 0.24 Carbon oxide CO daily hourly 4.00 10.00 4.00 10.00 6.00 20.00 Ozone O3 hourly 0.12 0.16 0.20 Lead Pb seasonally annually 1.50 1.00 苯并[a]芘B[a]P daily 0.01 μg/m3 (Standard state) Fluorides daily hourly 7① 20① F monthly Plant growing seas. 1.8② 1.2② 3.0③ 2.0③ μg/(dm2·d) China National Ambient Air Quality Standards (GB 3095－1996 )
Air Pollution Index (API) ◆Why API? Easier understanding of public; Consistent description among regulated pollutants
Air Pollution Index (API) Why API? Easier understanding of public; Consistent description among regulated pollutants
Air Pollution Index (API) Air Pollution Index(API)was introduced by US as Pollutant Standard Index(PSI)in 1972,and currently is referred to as Air Quality Index(AQI). API system of Shanghai Class I Ⅱ IV API Range 0-5051-100 101-200 201-300 >300 Description Good Fair Lightly Polluted Heavily polluted polluted 00 400 20 PM10(mg/m3) 3 0.4 0.5
Air Pollution Index (API) Air Pollution Index (API) was introduced by US as Pollutant Standard Index (PSI) in 1972, and currently is referred to as Air Quality Index (AQI). API system of Shanghai Class I II III IV V API Range 0-50 51-100 101-200 201-300 >300 Description Good Fair Lightly polluted Polluted Heavily polluted
The API system in China Air quality Before June 2000 Class API S02 NOx TSP I 0-50 0.000-0.050 0.000-0.050 0.000-0.120 Ⅱ 50-100 0.050-0.150 0.050-0.100 0.120-0.300 Ⅲ 100-200 0.150-0.250 0.100-0.150 0.300-0.500 V 200-300 0.250-1.600 0.150-0.565 0.500-0.625 V 300-400 1.600-2.100 0.565-0.750 0.625-0.875 400-500 2.100-2.620 0.750-0.940 0.875-1.000 Air quality After June 2000 Class API S02 NO2 PMio I 0-50 0.000-0.050 0.000-0.080 0.000-0.050 Ⅱ 50-100 0.050-0.150 0.080-0.120 0.050-0.150 Ⅲ 100-200 0.150-0.800 0.120-0.280 0.150-0.350 N 200-300 0.800-1.600 0.280-0.565 0.350-0.425 V 300-400 1.600-2.100 0.565-0.750 0.420-0.500 400-500 2.100-2.620 0.750-0.940 0.500-0.600
The API system in China Air quality Class API Before June 2000 SO2 NOX TSP Ⅰ 0-50 0.000-0.050 0.000-0.050 0.000-0.120 Ⅱ 50-100 0.050-0.150 0.050-0.100 0.120-0.300 Ⅲ 100-200 0.150-0.250 0.100-0.150 0.300-0.500 Ⅳ 200-300 0.250-1.600 0.150-0.565 0.500-0.625 Ⅴ 300-400 1.600-2.100 0.565-0.750 0.625-0.875 400-500 2.100-2.620 0.750-0.940 0.875-1.000 Air quality After June 2000 Class API SO2 NO2 PM10 Ⅰ 0-50 0.000-0.050 0.000-0.080 0.000-0.050 Ⅱ 50-100 0.050-0.150 0.080-0.120 0.050-0.150 Ⅲ 100-200 0.150-0.800 0.120-0.280 0.150-0.350 Ⅳ 200-300 0.800-1.600 0.280-0.565 0.350-0.425 Ⅴ 300-400 1.600-2.100 0.565-0.750 0.420-0.500 400-500 2.100-2.620 0.750-0.940 0.500-0.600