In this study, size-segregated particulate matter samples were collected in Raipur, India from July 2009 to June 2010 by using eight-stage cascade impactor sampler. The annual average concentrations and associated standard deviation of PM10, PM2.5–10, PM2.5, and PM1 were 270.5 ± 105.5, 119.6 ± 44.6, 150.9 ± 78.6, and 72.5 ± 39.0 μg/m3, respectively. The PM10 and PM2.5 levels at Raipur, India were well above the annual National Ambient Air Quality Standards of India of 60 and 40 μg/m3 for PM10 and PM2.5, respectively.

This paper reports the atmospheric concentrations of PM2.5 and PM1 mass, water soluble inorganic components and their seasonal variations measured between the period of July 2009 and June 2010 in Durg city (20°23' to 22°02'N and 80°46' to 81°58'E), India.