Saxena, Mohit and Singh, D. P. and Saud, T. and Gadi, Ranu and Singh, S. and Sharma, S. K. and Mandal, T. K. (2014) Study on particulate polycyclic aromatic hydrocarbons over Bay of Bengal in winter season. Atmospheric Research, 145. pp. 205-213. ISSN 0169-8095

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Abstract

Particulate polycyclic aromatic hydrocarbon (PAH) concentration was estimated during Integrated Campaign on Aerosol, Gases and Radiation Budget (ICARB-W) in winter (2008-2009) on board the Sagar Kanya over Bay of Bengal (BOB). The concentration of particulate PAH (Sigma(11) 6.65 +/- 2.86 ng/m(3)) over BOB ranged from 028 ng/m(3) to 1.15 ng/m(3). The concentration of middle and high molecular weight PAHs (46 rings), accounted for >50% of total PAHs. Analysis of photochemical oxidation using ratios of BaA/Chy and BaP/BbF suggested the fresh release of air masses from local sources or from the nearest coastal areas of BOB. Principal component analysis (PCA) and correlation between tPAHs, nss-K+, nss-SO42-, NO3-, organic carbon (OC) and elemental carbon (EC) suggested that motor vehicle emission, biomass burning and coal combustion may be the possible principal sources of PAHs over BOB during the study period.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Bay of Bengal Marine aerosol Polycyclic aromatic hydrocarbon Spatial distribution Toxicity PCA
Subjects:	Meteorology & Atmospheric Sciences
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	20 Nov 2015 06:31
Last Modified:	20 Nov 2015 06:31
URI:	http://npl.csircentral.net/id/eprint/1570

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