Time Concentration in Methods of Measurement Weighted Ambient Air Pollutant Average Ecologically Sensitive Area (Notified Rural by Central and Government) other Areas Sulphur Dioxide Annual * 50 20 -Improved West and Gaeke (SO2), µg/m3 24 Hours 80 80 Method ** -Ultraviolet Fluorescence Nitrogendioxide Annual * 40 30 -Jacob &Hochheiser (NO2), µg/m3 24 Hours 80 80 modified (NaOH-NaAsO2) ** Method -Gas Phase Chemiluminescence Particulate Matter Annual * 60 60 -Gravimetric (Size less than 10µm) 24 Hours 100 100 -TEOM or PM10, µg/m3 ** -Beta attenuation Particulate Matter Annual * 40 40 -Gravimetric (Size less than 2.5µm) 24 Hours 60 60 -TEOM or PM2.5, µg/m3 ** -Beta attenuation Ozone (O3) , µg/m3 8 Hours * 100 100 -UV Photometric 1 Hour ** 180 180 -Chemiluminescence -Chemical Method Lead (Pb) , µg/m3 Annual * 0.50 0.50 -AAS/ICP Method after 24 ** 1.0 1.0 sampling on EPM 2000 or equivalent filter paper -ED-XRF Teflon filter Carbon Monoxide 8 Hours ** 02 02 -Non dispersive Infrared (CO), mg/m3 1 Hour ** 04 04 (NDIR) Spectroscopy Ammonia (NH3), Annual * 100 100 -Chemiluminescence µg/m3 24 Hours 400 400 -Indophenol blue method ** Benzene (C6H6), Annual * 05 05 -Gas Chromatography µg/m3 (GC) based continuous analyzer -Adsorption and desorption followed by GC analysis (BaP) Annual * 01 01 -Solvent extraction followed Particulate phase byHPLC/GC analysis only, ng/m3 Arsenic (As), ng/m3 Annual * 06 06 -AAS/ICP Method after sampling on EPM 2000 or equivalent filter paper Nickel (Ni), ng/m3 Annual * 20 20 -AAS/ICP Method after sampling on EPM 2000 or equivalent filter paper * Annual Arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform intervals.
Pollutant Time Weighted Average Concentration in Ambient Air Methods of Measurement Rural and other Areas Ecologically Sensitive Area (Notified by Central Government) Sulphur Dioxide (SO2), µg/m3 Annual * 24 Hours ** 50 80 20 80 -Improved West and Gaeke Method -Ultraviolet Fluorescence Nitrogendioxide (NO2), µg/m3 Annual * 24 Hours ** 40 80 30 80 -Jacob &Hochheiser modified (NaOH-NaAsO2) Method -Gas Phase Chemiluminescence Particulate Matter (Size less than 10µm) or PM10, µg/m3 Annual * 24 Hours ** 60 100 60 100 -Gravimetric -TEOM -Beta attenuation Particulate Matter (Size less than 2.5µm) or PM2.5, µg/m3 Annual * 24 Hours ** 40 60 40 60 -Gravimetric -TEOM -Beta attenuation Ozone (O3) , µg/m3 8 Hours * 1 Hour ** 100 180 100 180 -UV Photometric -Chemiluminescence -Chemical Method Lead (Pb) , µg/m3 Annual * 24 ** 0.50 1.0 0.50 1.0 -AAS/ICP Method after sampling on EPM 2000 or equivalent filter paper -ED-XRF Teflon filter Carbon Monoxide (CO), mg/m3 8 Hours ** 1 Hour ** 02 04 02 04 -Non dispersive Infrared (NDIR) Spectroscopy Ammonia (NH3), µg/m3 Annual * 24 Hours ** 100 400 100 400 -Chemiluminescence -Indophenol blue method Benzene (C6H6), µg/m3 Annual * 05 05 -Gas Chromatography (GC) based continuous analyzer -Adsorption and desorption followed by GC analysis (BaP) Particulate phase only, ng/m3 Annual * 01 01 -Solvent extraction followed byHPLC/GC analysis Arsenic (As), ng/m3 Annual * 06 06 -AAS/ICP Method after sampling on EPM 2000 or equivalent filter paper Nickel (Ni), ng/m3 Annual * 20 20 -AAS/ICP Method after sampling on EPM 2000 or equivalent filter paper * Annual Arithmetic mean of minimum 104 measurements in a year at a particular site taken twice a week 24 hourly at uniform intervals.