US EPA

7697187 

Journal Article 

Stable Carbon Isotope and Bulk Composition of Wintertime Aerosols from Kanpur 

Singh, GK; Paul, D; Rajput, P; Gupta, T; , 

2018 

SPRINGER-VERLAG SINGAPORE PTE LTD 

SINGAPORE 

ENVIRONMENTAL CONTAMINANTS: MEASUREMENT, MODELLING AND CONTROL 

209-220 

10.1007/978-981-10-7332-8_10 

WOS:000448872300012 

http://link.springer.com/10.1007/978-981-10-7332-8_10
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This study assesses stable carbon isotopic composition (delta C-13) of total carbon (TC) in ambient aerosols (PM2.5) during wintertime (December 2014) from Kanpur (26.30 degrees N, 80.14 degrees E) in northern India. Chemical constituents viz organic carbon (OC), elemental carbon (EC) and water-soluble ions in PM2.5 have also been measured. Back trajectories of air masses arriving at the sampling site (Centre for Environmental Science and Engineering, IIT Kanpur) have been utilized to infer the air-mass transport. Most of the trajectories showed their origin from northwestern region during the study period. Average PM2.5 and TC concentrations were centered around 240 mu g m(-3) and 91 mu g m(-3), respectively. The OC + EC concentrations averaged at 58 +/- 15 mu g m(-3). Significant linear correlation between OC and EC in conjunction with high OC/EC ratio (9 to 12) suggests dominance of anthropogenic combustion sources of organic aerosols. Concentration of anthropogenic ionic species (SO42- + NO3- + NH4+) averaged at 46.74 mu g m(-3). The average delta C-13 values of TC in the integrated 24-h samples were centered around -25%. Integrated data analyses of chemical constituents and stable C isotope suggests the influence of mixed emission sources. Future studies are required to better constraint the observations. 

Gupta, T; Agarwal, AK; Agarwal, RA; Labhsetwar, NK; 

978-981-10-7331-1