title: Source apportionment of ambient VOCs in Delhi City.
abstract: Source apportionment using chemical mass balance (CMB) model was carried using a data set of 360 four hourly samples collected at 15 locations of five categories namely residential, commercial, industrial, traffic intersections and petrol pumps during August 2001-July 2002 in Delhi. The results indicate that emissions from diesel internal combustion engines dominate in Delhi. Vehicular exhaust and evaporative emissions also contribute significantly to VOCs in ambient air. Emission of VOCs associated with sewage sludge was also found to contribute to VOCs in Delhi's air. This points to the fact that open defecation and leaking sewage manholes are a problem in all categories of locations.
authors.affiliation: National Environmental Engineering Research Institute, 89/B, Dr.A.B.Road, Worli, Mumbai-400 018, India. srivastv@vsnl.com
authors.forename: Anjali
authors.initials: A
authors.lastname: Srivastava
authors.forename: B
authors.initials: B
authors.lastname: Sengupta
authors.forename: S A
authors.initials: SA
authors.lastname: Dutta
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004784:Environmental Monitoring; D007194:India; D015233:Models, Statistical; D009930:Organic Chemicals / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis; D014835:Volatilization
chemical_list: D000393:Air Pollutants; D009930:Organic Chemicals; D001335:Vehicle Emissions