Winter time particulate matter concentrations at an urban roadway in India
by B. Srimuruganandam; S.M. Shiva Nagendra
International Journal of Environmental Engineering (IJEE), Vol. 5, No. 4, 2013

Abstract: This paper presents analysis and interpretation of 1-hr average fine (PM₁ and PM_2.5) and coarse (PM₁₀) particulate matter (PM) concentrations measured during winter 2008 and 2009 at a roadside in Chennai city, India. Results showed typical weekly and diurnal cycles with high concentrations corresponding morning and evening peak traffic flows. The 24-hr average PM₁₀ and PM_2.5 concentrations were found to be 135 ± 65 and 73 ± 39 µg/m³ in winter 2008 and 131 ± 75 and 67 ± 32 µg/m³ in winter 2009, respectively and were violating the NAAQS (PM₁₀ = 100 µg/m³; PM_2.5 = 60 µg/m³) and WHO (PM₁₀ = 50 µg/m³; PM_2.5 = 25 µg/m³) limits. The daily PM₁ concentrations at the study site were in the range of 11-200 (mean = 56) µg/m³. The estimated mortality relative risks associated with daily PM concentrations showed a high (81-85%) and moderate (42-48%) relative risks for PM₁₀ and PM_2.5, respectively, at the study site.

Online publication date: Thu, 31-Oct-2013

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