Determination of particulate matter fractions pm2.5, pm10 and co2 in urban schools in Imphal, India

Measurements were carried out to determine the PM2.5, PM10 and, CO2 levels in schools located urban areas of Imphal, Manipur. The particulate matters (PM2.5 and PM10) monitored gravimetrically with standardised samplers, while air was measured by gas chromatography. Average PM2.5 concentration classrooms 41.0 ± 9.0 µg/m3 79.4 20.2 µg/m3, respectively, it comparatively higher than outdoor 34.8 8.0 64.7 18.9 respectively. average indoor 1250.6 131.3 ∙ 103 885.7 94.7 ∙103 µg/m3. highest (58.3 µg/m3), (112.5 µg/m3) (1457.5 recorded indoors, a school at heart city, whereas lowest (25.0 (45.8 (1045.7 away from city centre. found exceed permissible limits prescribed National Ambient Air Quality Standards more half sampling. There strong positive correlation between pollutant concentrations.