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<article language="en">
	<journal>
		<journal_title>Atmospheric Chemistry and Physics Discussions</journal_title>
		<journal_url>www.atmos-chem-phys-discuss.net</journal_url>
		<issn>1680-7367</issn>
		<eissn>1680-7375</eissn>
		<volume_number>9</volume_number>
		<issue_number>5</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/acpd-9-21915-2009</doi>
	<article_url>http://www.atmos-chem-phys-discuss.net/9/21915/2009/</article_url>
	<abstract_html>http://www.atmos-chem-phys-discuss.net/9/21915/2009/acpd-9-21915-2009.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys-discuss.net/9/21915/2009/acpd-9-21915-2009.pdf</fulltext_pdf>
	<start_page>21915</start_page>
	<end_page>21940</end_page>
	<publication_date>2009-10-19</publication_date>
	<article_title content_type="html">Source apportionment of mercury in dust fallout at urban residential area of Central India</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>S. Pervez</name>
			<email>shamshp@yahoo.co.in</email>
		</author>
		<author numeration="2" affiliations="1">
			<name>G. Balakrishna</name>
		</author>
		<author numeration="3" affiliations="2">
			<name>S. Tiwari</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492010, India</affiliation>
		<affiliation numeration="2" content_type="html">Indian Institute of Tropical Meteorology Pune Zonal Laboratory, New Delhi,  India</affiliation>
	</affiliations>
	<abstract content_type="html">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  (e.g. industrial
complexes composed of a variety of industrial processes, automobiles,
construction activities etc.) 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 Mercury 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. 24 samples of dust fallout has been
collected from each site  (one in each month) and subjected to chemical
analysis of selected chemical constituents known as markers of selected
major dust emitting sources  (Steel making average, Road traffic-borne dusts,
construction activities, Auto mobile exhaust, and soils). Chemical
composition of dust measured at sites marked for identified sources
alongwith SPECIATE of USEPA has been used for the preparation of source
profiles. Three classified residential receptors  (ambient-outdoor,
house-indoors and local street-outdoors) have been chosen for development of
receptor compositional profiles. Source apportionment has been done using
Chemical Mass Balance  (CMB 8). Good fit parameters and relative source
contribution has been analysed and documented. Dust fallout and respective
mercury levels were found tobe higher compared to prescribed standards.
Variation in relative contribution of selected sources from site to site
within the study area has been occurred. Dominance of local line and area
sources  (road-traffic and construction borne dusts) on mercury levels
measured at selected residential receptors compared to stationary industrial
sources has been observed. Road-traffic has shown highest contribution of
dust and mercury in house-indoors, while in case of ambient-outdoor the
receptor has shown different higher susceptibility of identified sources for
dust and mercury. The results of CMB output and regression data of
source-receptor dust matrices have shown comparable pattern.</abstract>
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</article>

