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Environ Monit Assess

Title:		Seasonal variation of toxic benzene emissions in petroleum refinery
Author(s):		Rao PS; Ansari MF; Gavane AG; Pandit VI; Nema P; Devotta S;
Address:		"Scientist, Air Pollution Control Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440 020, India. ps_rao@neeri.res.in"
Journal Title:		Environ Monit Assess
Year:		2007
Volume:		20061021
Issue:		1-Mar
Page Number:		323 - 328
DOI:		10.1007/s10661-006-9315-5
ISSN/ISBN:		0167-6369 (Print) 0167-6369 (Linking)
Abstract:		"Petroleum refineries are largest chemical industries that are responsible for the emission of several pollutants into the atmosphere. Benzene is among the most important air pollutants that are emitted by petroleum refineries, since they are involved in almost every refinery process. Volatile organic compounds (VOCs) are a major group of air pollutants, which play a critical role in atmospheric chemistry. These contribute to toxic oxidants, which are harmful to ecosystem, human health and atmosphere. The variability of pollutants is an important factor in determining human exposure to these chemicals. The ambient air concentrations of benzene were measured in several sites around the Digboi petroleum refinery, near the city of Gowahati in northeast India, during winter and summer 2004. The seasonal and spatial variations of the ambient air concentrations of this benzene were investigated and analyzed. An estimation of the contribution of the refinery to the measured atmospheric levels of benzene was also performed. The ambient air mixing ratios of benzene in a large area outside the refinery was generally low, in ppbv range, much lower than the ambient air quality standards. This article presents the temporal and spatial variation of air pollution in and around petroleum refinery and showed that no health risk due to benzene is present in the areas adjacent to the refinery"
Keywords:		Air Pollutants/*analysis/toxicity Benzene/*analysis/toxicity *Chemical Industry *Petroleum *Seasons;
Notes:		"MedlineRao, P S Ansari, M F Gavane, A G Pandit, V I Nema, P Devotta, S eng Netherlands 2006/10/24 Environ Monit Assess. 2007 May; 128(1-3):323-8. doi: 10.1007/s10661-006-9315-5. Epub 2006 Oct 21"