Load of Heavy Metals and Pah Presence in the Airborne Dust Particulates of Nagpur City

The heavy metals heavy metals characterization and pahs presence in the airborne dust particulates have been studied in different representative areas of nagpur city. This report presents the profile of pah, monitored in the particle bound ambient air of nagpur city in Maharashtra. Respirable dust and fine particulate sampler collected the ambient air particulate on the filter paper. Extracted samples were analyzed by atomic absorption spectrophometer (aas) for heavy metals viz. Cr, ni, cu, zn and pb respectively and same extract sample analyzed by capillary gas chromatography using fid for various pahs. The occurrence of metal concentration were generally in order to industrial > commercial > residential are in Nagpur city. The result analysis show the existence of toxic metal concentration in the order zn > pb > ni > cr > cu in nagpur city. These large levels of metals pollutants have been also correlated with some meteorological parameters like temperature, relative humidity and wind velocity. Further also during study period it was observed that b(a)a concentration ranging from 0.0 to 1.56 ng/m3, b(b)f concentration ranging 0.0 to 1.28 ng/m3 and b(a)p was ranged from 0.0 to 1,01 ng/m3. During the winter season the concentration of pah's recorded higher as compare to monsoon & summer seasons. This might be due to foggy conditions in winter.