Molecular markers in ambient aerosol in the Mahanadi Riverside Basin of eastern central India during winter

Nirmalkar, Jayant; Deb, Manas K.; Deshmukh, Dhananjay K.; Tsai, Ying I.; Verma, Santosh K.

Molecular markers in ambient aerosol in the Mahanadi Riverside Basin of eastern central India during winter

2015

Nirmalkar, Jayant | Deb, Manas K. | Deshmukh, Dhananjay K. | Tsai, Ying I. | Verma, Santosh K.

Organic molecular markers are important atmospheric constituents. Their formation and sources are important aspects of the study of urban and rural air quality. We collected PM₁₀aerosol samples from the Mahanadi Riverside Basin (MRB), a rural part of eastern central India, during the winter of 2011. PM₁₀aerosols were characterized for molecular markers using ion chromatography. The concentration of PM₁₀ranged from 208.8 to 588.3 μg m⁻³with a mean concentration of 388.9 μg m⁻³. Total concentration of anhydrosugars, sugar alcohols, primary sugars, and oxalate were found to be 3.25, 5.60, 10.52, and 0.37 μg m⁻³, respectively, during the study period. Glucose was the most abundant species followed by levoglucosan and mannitol. Significant positive correlation between the molecular markers, anhydrosugars, sugar alcohols, primary sugars, and oxalic acid confirmed that biomass burning, biogenic activity, and re-suspension of soil particles were the main sources of aerosol in the eastern central India study area.

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