title: Variation of Stable Carbon and Nitrogen Isotopic Composition of PM10 at Urban Sites of Indo Gangetic Plain (IGP) of India.
abstract: This paper presents the variation of elemental concentrations of total carbon (TC), total nitrogen (TN) and isotopic ratios of δ13C and δ15N along with δ13OC and OC of PM10 mass over Delhi, Varanasi and Kolkata of the Indo Gangetic Plain (IGP), India. For Delhi, the average concentrations of TC and TN of PM10 were 53.0±33.6 and 14.9±10.8 µg m(-3), whereas δ13C and δ15N of PM10 were -25.5±0.5 and 9.6±2.8‰, respectively. For Varanasi, the average values of δ13C and δ15N of PM10 were -25.4±0.8 and 6.8±2.4‰, respectively. For Kolkata, TC and TN values for PM10 ranged from 9.1-98.2 to 1.4-25.9 µg m(-3), respectively with average values of 32.6±24.9 and 9.3±8.2 µg m(-3), respectively. The average concentrations of δ13C and δ15N were -26.0±0.4 and 7.4±2.7‰, respectively over Kolkata with ranges of -26.6 to -24.9‰ and 2.8±11.5‰, respectively. The isotopic analysis revealed that biomass burning, vehicular emission and secondary inorganic aerosols were likely sources of PM10 mass over IGP, India.
authors.affiliation: CSIR-National Physical Laboratory, Dr. K S Krishnan Road, New Delhi, 110 012, India. sudhircsir@gmail.com.
authors.forename: S K
authors.initials: SK
authors.lastname: Sharma
authors.affiliation: CSIR-National Physical Laboratory, Dr. K S Krishnan Road, New Delhi, 110 012, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Mandal
authors.affiliation: CSIR-National Institute of Oceanography, Dona Paula, Panaji, Goa, 403 004, India.
authors.forename: D M
authors.initials: DM
authors.lastname: Shenoy
authors.affiliation: CSIR-National Institute of Oceanography, Dona Paula, Panaji, Goa, 403 004, India.
authors.forename: Pratirupa
authors.initials: P
authors.lastname: Bardhan
authors.affiliation: Department of Geophysics, Banaras Hindu University, Varanasi, 221 005, India.
authors.forename: Manoj K
authors.initials: MK
authors.lastname: Srivastava
authors.affiliation: Centre for Astroparticle Physics and Space Sciences, Bose Institute, Kolkata, 700091, India.
authors.forename: A
authors.initials: A
authors.lastname: Chatterjee
authors.affiliation: CSIR-National Physical Laboratory, Dr. K S Krishnan Road, New Delhi, 110 012, India.
authors.forename: Mohit
authors.initials: M
authors.lastname: Saxena
authors.affiliation: CSIR-National Physical Laboratory, Dr. K S Krishnan Road, New Delhi, 110 012, India.
authors.lastname: Saraswati
authors.affiliation: Department of Geophysics, Banaras Hindu University, Varanasi, 221 005, India.
authors.forename: B P
authors.initials: BP
authors.lastname: Singh
authors.affiliation: Centre for Astroparticle Physics and Space Sciences, Bose Institute, Kolkata, 700091, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Ghosh
mesh_terms: D000336:Aerosols / Q000032:analysis; D000393:Air Pollutants / Q000032:analysis*; D002247:Carbon Isotopes / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D007194:India; D009587:Nitrogen Isotopes / Q000032:analysis*; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D014507:Urbanization; D001335:Vehicle Emissions / Q000032:analysis
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D052638:Particulate Matter; D001335:Vehicle Emissions
keywords: Carbon isotopes; Elemental carbon; Nitrogen isotopes; Organic carbon; PM10