Source apportionment of arsenic in atmospheric dust fall out in an urban residential area, Raipur, Central India 1School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur (C.G). 492010, India
01 Jun 2011
2Indian Institute of Tropical Meteorology Pune, Zonal Laboratory, New Delhi, India
Received: 29 September 2010 – Published in Atmos. Chem. Phys. Discuss.: 05 November 2010 Abstract. The components and quantities of atmospheric dust fallout have been reported
to be the pollution indicator of large urban areas. The multiplicity and
complexity of sources of atmospheric dusts in urban regions has put forward
the need of source apportionment of these sources indicating their
contribution to specific environmental receptor. The study presented here is
focused on investigation of source contribution estimates of Arsenic in
urban dust fallout in an urban-industrial area, Raipur, India.
Source-receptor based representative sampling plan using longitudinal study
design has been adopted. Six sampling sites have been identified on the
basis of land use for development plan of anthropogenic activities and
factors related to the transportation and dispersion pattern of atmospheric
dusts. Source apportionment has been done using Chemical Mass Balance (CMB
8). Good fit parameters and relative source contribution has been analyzed
and documented. Dominance of coal fired industries sources on arsenic levels
measured at selected ambient residential receptors compared to line sources
has been observed. Road-traffic has shown highest contribution of dust at
indoor houses and out door-street automobile exhaust has shows highest
contribution for arsenic. The results of CMB output and regression data of
source-receptor dust matrices have shown comparable pattern.
Revised: 02 April 2011 – Accepted: 18 April 2011 – Published: 01 June 2011
Citation: Balakrishna, G., Pervez, S., and Bisht, D. S.: Source apportionment of arsenic in atmospheric dust fall out in an urban residential area, Raipur, Central India, Atmos. Chem. Phys., 11, 5141-5151, doi:10.5194/acp-11-5141-2011, 2011.