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INDOOR AIR QUALITY IN DOMESTIC HOMES AT ROADSIDE, URBAN AND RURAL LOCATIONS OF SEMI ARID REGION IN INDIA. - INDOOR/OUTDOOR RELATIONSHIP
Alfred J. Lawrence, A. Masih, Mayank Bhanti, Ajay Taneja School of Chemical Sciences, Department of Chemistry, St. John’s College

ABSTRACT

Ambient air quality is a serious concern in many cities of India. This problem has attracted attention of policy makers, the Indian Supreme Court, research institutes, Universities and donor agencies. In addition, many recent policy intervention have been undertaken to improve ambient air quality but very little is known about Indoor Air Quality (IAQ). People spend the majority of their time indoor, mostly in domestic environment, where their health may be affected mostly by indoor air pollution. This study attempts to provide information about the present IAQ of residential homes in Agra (world famous for TAJMAHAL) India, located in three different locations that are roadside, urban and rural during five months of winter season from Oct’2003 to Feb’2004. Air pollutants measured in the living rooms of the homes in this study included CO, CO2, NOx (NO+NO2) and SO2. Average concentrations of these pollutants were calculated and statistical correlation between indoor concentration levels and outdoor concentration levels was calculated for all the houses. On comparing 8 hourly averages of indoor concentrations of pollutants between the houses three locations, it was found that the CO and CO2 concentration was maximum at roadside houses 2.3ppm and 480ppm respectively, where as NOx concentration were maximum at the urban houses, NO 0.3ppm and NO2 0.2ppm, SO2 was maximum in the rural houses 0.1ppm. An activity schedule of these houses was also prepared to see its influence on concentration of pollutants. Though it was seen that the indoor concentration at all the houses of the three sites have positive correlation with outdoor concentration but in cases of CO and CO2, variation in indoor were very less due to outdoor sources. As standards for indoor air were not available for the Indian conditions these were compared with the known standards of other country and were seen that all the indoor concentrations lies below the permissible limits.

 


INDOOR AIR QUALITY IN DOMESTIC HOMES AT ROADSIDE, URBAN AND RURAL LOCATIONS OF SEMI ARID REGION IN INDIA. - INDOOR/OUTDOOR RELATIONSHIPINDOOR AIR QUALITY IN DOMESTIC HOMES AT ROADSIDE, URBAN AND RURAL LOCATIONS OF SEMI ARID REGION IN INDIA. - INDOOR/OUTDOOR RELATIONSHIP
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