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
Citations
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A review of the anthropogenic influence on biogenic secondary organic aerosol
Christopher R. Hoyle,Christopher R. Hoyle,Michael Boy,Neil M. Donahue,Juliane L. Fry,Marianne Glasius,Alex Guenther,Anna G. Hallar,K. E. Huff Hartz,Markus D. Petters,Tuukka Petäjä,Thomas Rosenoern,Amy P. Sullivan +12 more
TL;DR: In this article, an enhanced biogenic secondary organic aerosol (eBSOA) was proposed to quantify the influence of anthropogenic emissions on the aerosol burden, both globally and regionally, and both in terms of mass and number.
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Premature mortality in India due to PM2.5 and ozone exposure
Sachin D. Ghude,D. M. Chate,Chinmay Jena,Gufran Beig,Rajesh Kumar,Mary C. Barth,Gabriele Pfister,Suvarna Fadnavis,Prakash Pithani +8 more
TL;DR: This bottom-up modeling study, supported by new population census 2011 data, simulates ozone (O3) and fine particulate matter (PM2.5) exposure on local to regional scales and quantifies, present-day premature mortalities associated with the exposure to near-surface PM2.3 and O3 concentrations in India using a regional chemistry model.
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Secondary organic aerosol: a comparison between foggy and nonfoggy days.
TL;DR: Enhanced oxidation of SO(2) to sulfate during foggy days was observed, possibly causing the regional aerosol to become more acidic, and lower EC concentrations were observed on foggy Days, suggesting fog scavenging and removal of EC was active as well.
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Variation in global chemical composition of PM 2.5 : emerging results from SPARTAN
Graydon Snider,Crystal L. Weagle,Kalaivani K. Murdymootoo,Amanda Ring,Yvonne Ritchie,Emily Stone,Ainsley Walsh,Clement Akoshile,Nguyen Xuan Anh,Rajasekhar Balasubramanian,Jeffrey R. Brook,Fatimah D. Qonitan,Jinlu Dong,D. Griffith,Kebin He,Brent N. Holben,Ralph A. Kahn,Nofel Lagrosas,Puji Lestari,Zongwei Ma,Amit Misra,Leslie K. Norford,Eduardo Quel,Abdus Salam,Bret A. Schichtel,Lior Segev,Sachchida Tripathi,Chien Wang,Chao Yu,Qiang Zhang,Yuxuan Zhang,Michael Brauer,Aaron Cohen,Mark D. Gibson,Yang Liu,J. Vanderlei Martins,Yinon Rudich,Randall V. Martin,Randall V. Martin +38 more
TL;DR: The surface particulate mAtter network (SPARTAN) is a long-term project that includes characterization of chemical and physical attributes of aerosols from filter samples collected worldwide.
Journal ArticleDOI
A review on recent progress in observations, sources, classification and regulations of PM2.5 in Asian environments
TL;DR: A critical synthesis of literature suggests a lack of exposure and monitoring studies to inform personal exposure in the household and rural areas of Asian environments, and the synthesis of regulatory guidelines and future perspectives for PM2.5 in Asian countries is concluded.
References
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Posted ContentDOI
Application of positive matrix factorization in estimating aerosol secondary organic carbon in Hong Kong and insights into the formation mechanisms
TL;DR: In this article, the authors examined the seasonal patterns of organic carbon (SOC) in Hong Kong using more than 2000 PM 10 measurements made over a 4.5-year period.
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