Characteristics of air pollutants at near and far field regions of a national highway located at an industrial complex

This paper presents the characterization of air quality monitored at near field region (NFR) and far field region (FFR) of a national highway located at an industrial complex. The pollutants such as PM₁₀ , SO₂ and NO₂ were monitored in two campaigns (11th September to 18th October 2012 and 18th January to 17th February 2013). The 24 h average PM10 concentration at NFR and FFR were found to be 86.69 ± 18.56 µg/m³; 73.16 ± 16.21 µg/m³ and 89.44 ± 18.69 µg/m3; 81.91 ± 16.42 µg/m³, respectively during first and second campaign. In both the campaigns PM₁₀, SO₂ and NO₂ concentration at NFR was higher than FFR. The chemical characterization of PM₁₀ at NFR and FFR indicated the abundance of major elements such as Na (NFR = 30% and FFR = 32%), Ca (NFR = 12% and FFR = 14%) and ions namely NO³- (NFR = 71% and FFR = 68%) and NH3+ (NFR = 15% and FFR = 19%). Further, at FFR, SO₄²- and NO³- were found to be 18% and 35% higher than NFR indicating the conversions of SO₂ and NO₂ concentration into secondary particles. The measured SO₂ and NO₂ concentrations were 23 and 21% lower at FFR when compared to NFR confirms the secondary formation. The CALPUFF, EPA regulatory model was set up to understand the dynamics of air pollutants at the industrial complex. The predicted PM₁₀, SO₂ and NO₂ concentrations at NFR and FFR were found to be 32.31 ± 1.56 µg/m³ and 31.35 ± 1.27 µg/m³; 0.37 ± 0.21 µg/m³ and 0.06 ± 0.04 µg/m³; 12.83 ± 6.55 µg/m³ and 4.67 ± 2.77 µg/m³, respectively. The model showed moderate predictions for PM₁₀ (R² = 0.44–0.52), SO₂ (R² = 0.41–0.51) and NO₂ (R² = 0.45–0.61) concentrations.

• Record URL:
  https://doi.org/10.1016/j.trd.2016.07.006
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S1361920916304035
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/13619209
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Shiva Nagendra, S M
  • Diya, M
  • Chithra, V S
  • Menon, Jyothi S
  • Peter, Anju Elizbath
• Publication Date: 2016-10

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: pp 1-13
• Serial:
  • Transportation Research Part D: Transport and Environment
  • Volume: 48
  • Publisher: Elsevier
  • ISSN: 1361-9209
  • Serial URL: http://www.sciencedirect.com/science/journal/13619209

Subject/Index Terms

• TRT Terms: Air pollution; Air quality; Environmental monitoring; Far field; Highways; Industrial plants; Near field; Nitrogen dioxide; Particulates; Pollutants; Stack gases; Sulfur dioxide
• Uncontrolled Terms: Secondary effects
• Subject Areas: Environment; Highways; Terminals and Facilities;

Filing Info

• Accession Number: 01612522
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 30 2016 9:56AM