Concentration of National Ambient Air Quality Standards (NAAQS) in Andhra Pradesh (2005-2006) | |||||
Pollutant | Concentration in Ambient Air | ||||
Time Weighted Average | Sensitive Area | Industrial Area | Residential Rural and Other Areas | Method of Measurement | |
Sulphur dioxide (mg/m3) | Annual Average* 24 hours** | 80mg/m3 120mg/m3 | 60mg/m3 80mg/m3 | 15mg/m3 30mg/m3 | Improved west and Geake method Ultraviolet Fluorescence |
Oxides of Nitrogen (mg/m3) | Annual Average* 24 hours** | 80mg/m3 120mg/m3 | 60mg/m3 80mg/m3 | 15mg/m3 30mg/m3 | Jacob and Hochheiser Modified (Naarsenite) Method Gas Phase Chemiluminescence |
Suspended Particulate Matter (SPM) (mg/m3) | Annual Average* 24 hours** | 360mg/m3 500mg/m3 | 140mg/m3 200mg/m3 | 70mg/m3 100mg/m3 | High volume sampling, (Average flow rate not less than 1.1m3/minute |
Respirable Particulate Matter (RPM) (mg/m3) | Annual Average* 24 hours** | 120mg/m3 150mg/m3 | 60mg/m3 100mg/m3 | 50mg/m3 75mg/m3 | Respirable Particulate matter sampler |
Lead (mg/m3) | Annual Average* 24 hours** | 1.0mg/m3 1.5mg/m3 | 0.75mg/m3 1.0mg/m3 | 0.5mg/m3 0.75mg/m3 | AAS method after sampling using EPM 2000 or equivalent filter paper |
Carbon monoxide (mg/m3) | 8 hours** 1 hours | 5.0mg/m3 10.0mg/m3 | 2.0mg/m3 4.0mg/m3 | 1.0mg/m3 2.0mg/m3 | Non Dispersive infra RED (NDIR) Spectroscopy |