Reconstructing Primary and Secondary Components of PM2.5 Composition for an Urban Atmosphere
Sailesh N. Behera,Mukesh Sharma +1 more
TLDR
In this paper, a total 360 PM25 samples were collected from six sampling sites for summer and winter seasons in Kanpur city, India and the collected PM25 mass was subjected to chemical speciation for: (1) ionic species (NH+ 4, SO2-4, NO 3, and Cl 3), (2) carbon contents (EC and OC), and (3) elemental contents (Ca, Mg, Na, K, Al, Si, Fe, Ti, Mn, V, Cr, Ni, Zn, Cd, Pb,Abstract:
Total 360 samples (of 8 h each) of PM25 were collected from six sampling sites for summer and winter seasons in Kanpur city, India The collected PM25 mass was subjected to chemical speciation for: (1) ionic species (NH+ 4, SO2– 4, NO– 3, and Cl–), (2) carbon contents (EC and OC), and (3) elemental contents (Ca, Mg, Na, K, Al, Si, Fe, Ti, Mn, V, Cr, Ni, Zn, Cd, Pb, Cu, As, and Se) Primary and secondary components of PM25 were assessed from speciation results The influence of marine source to PM25 was negligible, whereas the contribution of crustal dust was significant (10% in summer and 7% in winter) A mass reconstruction approach for PM25 could distinctly establish primary and secondary components of measured PM25 as: (1) Primary component (27% in summer and 24% in winter): crustal, elemental carbon, and organic mass, (2) Secondary component (45% in summer and 50% in winter): inorganic and organic mass, and (3) others: unidentified mass (27% in summer and 26% in winter) The secondary inorganic read more
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Source Profiles for PM10-2.5 Resuspended Dust and Vehicle Exhaust Emissions in Central India
Shamsh Pervez,Shahina Bano,John G. Watson,John G. Watson,Judith C. Chow,Judith C. Chow,Jeevan Lal Matawle,Anjali Shrivastava,Suresh Tiwari,Yasmeen Pervez +9 more
TL;DR: In this article, the authors developed composite PM10-2.5 source profiles for resuspended dust and vehicle exhaust emissions with 32 chemical species, including 21 elements (Al, As, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, Pb, S, Sb, Se, V, and Zn), 9 water-soluble ions (Na+, K+, Mg2+, Ca2+, NH4+, Cl−, F−, NO3−, and SO42
Journal ArticleDOI
Chemical Characteristics of Fine and Coarse Particles during Wintertime over Two Urban Cities in North India
TL;DR: In this paper, water-soluble inorganic ions (WSII), organic carbon (OC) and elemental carbon (EC), and metals in the residue of the water soluble fraction were studied in fine and coarse (PM2.5-10) particles during winter over two urban cities, Amritsar (AMS) and New Delhi (DEL), in northern India.
Journal ArticleDOI
Passive measurement of NO2 and application of GIS to generate spatially-distributed air monitoring network in urban environment
TL;DR: In this article, the authors proposed locations of air quality sampling sites for a long-term monitoring network in Delhi and Kanpur, respectively, based on the survey results on emission activities, meteorology and pollution maps.
Journal ArticleDOI
Evolution of Source Contributions During Heavy Fine Particulate Matter (PM2.5) Pollution Episodes in Eastern China Through Online Measurements
Juanyong Shen,Qianbiao Zhao,Zhen Cheng,Juntao Huo,Wenfei Zhu,Yihua Zhang,Yusen Duan,Xiaoliang Wang,L.-W. Antony Chen,Qingyan Fu +9 more
TL;DR: In this paper, a two-month field campaign was conducted in the winters of 2015 and 2016 at a regional supersite in eastern China and over one thousand hourly online measurements for twenty PM2.5 species were obtained.
Snapshot of PM Loads Evaluated at Major Road and Railway Intersections in an Urban Locality
TL;DR: In this paper, the authors reveal high particulate matter mass concentrations (PM10, PM2.5, and PM1) emitted from different sources at major road and railroad intersections in Kanpur city during summer and winter seasons of the year 2011.
References
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Species contributions to PM2.5 mass concentrations: Revisiting common assumptions for estimating organic mass
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