| Title: | "Characterization of PM(2.5) in Delhi: role and impact of secondary aerosol, burning of biomass, and municipal solid waste and crustal matter" |
| Author(s): | Nagar PK; Singh D; Sharma M; Kumar A; Aneja VP; George MP; Agarwal N; Shukla SP; |
| Address: | "Department of Civil Engineering, Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India. Department of Civil Engineering, Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, 208016, India. mukesh@iitk.ac.in. Department of Environment, Government of National Capital Territory of Delhi, New Delhi, 110002, India. Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, 27695-8208, USA. Delhi Pollution Control Committee, Government of National Capital Territory of Delhi, New Delhi, 110002, India. Department of Civil Engineering, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, 226021, India" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-017-0171-3 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Delhi is one among the highly air polluted cities in the world. Absence of causal relationship between emitting sources of PM(2.5) and their impact has resulted in inadequate actions. This research combines a set of innovative and state-of-the-art analytical techniques to establish relative predominance of PM(2.5) sources. Air quality sampling at six sites in summer and winter for 40 days (at each site) showed alarmingly high PM(2.5) concentrations (340 +/- 135 mug/m(3)). The collected PM(2.5) was subjected to chemical speciation including ions, metals, organic and elemental carbons which followed application of chemical mass balance technique for source apportionment. The source apportionment results showed that secondary aerosols, biomass burning (BMB), vehicles, fugitive dust, coal and fly ash, and municipal solid waste burning were the important sources. It was observed that secondary aerosol and crustal matter accounted for over 50% of mass. The PM(2.5) levels were not solely result of emissions from Delhi; it is a larger regional problem caused by contiguous urban agglomerations. It was argued that emission reduction of precursors of secondary aerosol, SO(2), NO(x), and volatile organic compounds, which are unabated, is essential. A substantial reduction in BMB and suspension of crustal dust is equally important to ensure compliance with air quality standards" |
| Keywords: | *Aerosols/analysis Air Pollutants/*analysis *Air Pollution Biomass Carbon/analysis Cities Coal Coal Ash Dust/analysis Environmental Monitoring/methods Fires India Particulate Matter/*analysis Seasons *Solid Waste Biomass burning MSW burning Pm2.5 Secondar; |
| Notes: | "MedlineNagar, Pavan K Singh, Dhirendra Sharma, Mukesh Kumar, Anil Aneja, Viney P George, Mohan P Agarwal, Nigam Shukla, Sheo P eng Germany 2017/09/20 Environ Sci Pollut Res Int. 2017 Nov; 24(32):25179-25189. doi: 10.1007/s11356-017-0171-3. Epub 2017 Sep 18" |
