Pollution Research Paper

Vol 33, Issue 04, 2014 ; Page No.(821-827 )

MOBILE VEHICULAR AIR POLLUTION MONITORING USING GIS, GPS AND SENSORS AT AMBATTUR IN CHENNAI CITY, INDIA

H. PRASAD RAJU AND P. PARTHEEBAN

Abstract

In India, urban air pollution has tremendously increased due to rapid growth of economic activities caused by liberalization and industrialization policy that started three decades ago. Usually, high volume samplers are used for collection of gaseous pollutants (SO2, NO2, CO) and suspended particulate matter (PM10 and PM2.5) and analysed using analytical instruments and procedures in the laboratories. As the sample collection and laboratory analysis is normally done continuously for either 24 hours or 8 hours, this method provides average values. It is laborious, expensive and time consuming though accurate and reliable. Alternatively, Solid State Gas Sensors, which are compact, handy and portable, can be used for measuring air quality. They provide instantaneous readings. Mobile monitoring can be done using these sensors and extensive area can be covered within short period. For this purpose Air Quality Monitoring Instrument (AQMI) is designed and developed using Gas Sensors and GPS antenna. The instrument consists of ARM processor, Gas Sensors of SO2, NO2 and CO, and GPS antenna. Using this instrument mobile monitoring of vehicular air pollution was carried out at Ambattur town. There are number of industries operating at Ambattur town apart from many vehicles operating due to economic activities at large. The Air Pollution measurement was carried out on high traffic volume routes at Ambattur. The average concentration of SO2 varied between 0.009 and 0.033 ppm, NO2 varied between 0.022 and 0.048 ppm, and CO varied between 1.1 and 9.0 ppm. The average concentration levels of SO2, NO2 and CO are found to be within the Pollution Control Board norms at many places except few.

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