Street-level concentrations of suspended particulate matter (SPM), nitrogen dioxide (NO2) and sulphur dioxide (SO2) in Pune City.

The concentration of suspended particulate matter (SPM), nitrogen dioxide (NO,) and sulphur dioxide (SO2) were measured at 13 important traffic intersections in Pune city. In order to study the contribution of these pollutants from motor vehicles, attention was focused on the roadside, street-level concentration. The statistical analysis of the sampling results indicates that there is not only high correlation between SPM and NO2 but the levels of these pollutants are above the National Ambient Air Quality Standards (NAAQS) laid down by the Central Pollution Control Board (CPCB), India. The SO, concentrations are found to be well below the NAAQS.