Abstract
The ambient air quality of Visakhapatnam with respect to particulates showed remarkable variation between industrial and residential areas. Both PM10 and PM2.5 reported moderate level in industrial area as per the AQI and Exceedance Factor. From the results of both PM2.5 and PM10, it is observed that PM has recorded above permissible limits in commercial and industrial areas whereas, in residential area, both PMs were within the limits of NAAQ standard. In Industrial area, Zn is found to be dominated with 27% of the total elements analyzed followed by aluminum, respectively. When metals exist beyond the permissible limits, they are potential to produce Reactive Oxygen Species (ROS) in humans and cause various health problems. From the study, it is concluded that PM has emerged as the most critical pollutant. The existence of PM2.5 above the permissible limit in industrial and commercial areas is a serious concern and immediate steps are to be initiated to identify the sources and the extent of their taking part in ambient air pollution.
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