caa a22 4500 467903131 CHVBK 20180406152824.0 cr unu---uuuuu 170328e20061101xx s 000 0 eng 10.1007/s10661-005-9168-3 doi (NATIONALLICENCE)springer-10.1007/s10661-005-9168-3 Distribution of PM2.5 and PM10-2.5 in PM10 Fraction in Ambient Air Due to Vehicular Pollution in Kolkata Megacity [Elektronische Daten] [Manab Das, Subodh Maiti, Ujjal Mukhopadhyay] This research paper aims at establishing baseline PM10 and PM2.5 concentration levels, which could be effectively used to develop and upgrade the standards in air pollution in developing countries. The relative contribution of fine fractions (PM2.5) and coarser fractions (PM10-2.5) to PM10 fractions were investigates in a megacity which is overcrowded and congested due to lack of road network and deteriorated air quality because of vehicular pollution. The present study was carried out during the winter of 2002. The average 24h PM10 concentration was 304 μg/m3, which is 3 times more than the Indian National Ambient Air Quality Standards (NAAQS) and higher PM10 concentration was due to fine fraction (PM2.5) released by vehicular exhaust. The 24h average PM2.5 concentration was found 179 μg/m3, which is exceeded USEPA and EU standards of 65 and 50 μg/m3 respectively for the winter. India does not have any PM2.5 standards. The 24 h average PM10-2.5 concentrations were found 126 μg/m3. The PM2.5 constituted more than 59% of PM10 and whereas PM10-PM2.5 fractions constituted 41% of PM10. The correlation between PM10 and PM2.5 was found higher as PM2.5 comprised major proportion of PM10 fractions contributed by vehicular emissions. Springer Science+Business Media, Inc., 2006 air quality nationallicence vehicular pollution nationallicence Kolkata city nationallicence PM10 nationallicence PM2.5 nationallicence Das Manab Indain School of Mines, 826004, Dhanbad, Jharkhand, India aut Maiti Subodh Indain School of Mines, 826004, Dhanbad, Jharkhand, India aut Mukhopadhyay Ujjal West Bengal Pollution Control Board, 700098, Kolkata, West Bengal, India aut Environmental Monitoring and Assessment Kluwer Academic Publishers 122/1-3(2006-11-01), 111-123 0167-6369 122:1-3<111 2006 122 10661 https://doi.org/10.1007/s10661-005-9168-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-005-9168-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Das Manab Indain School of Mines, 826004, Dhanbad, Jharkhand, India aut NATIONALLICENCE 700 1- Maiti Subodh Indain School of Mines, 826004, Dhanbad, Jharkhand, India aut NATIONALLICENCE 700 1- Mukhopadhyay Ujjal West Bengal Pollution Control Board, 700098, Kolkata, West Bengal, India aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 122/1-3(2006-11-01), 111-123 0167-6369 122:1-3<111 2006 122 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer