Carbonaceous Species of PM2.5 in Megacity Delhi, India During 2012–2016
Organic carbon (OC) and elemental carbon (EC) in PM2.5 were estimated to study the seasonal and inter-annual variability of atmospheric total carbonaceous aerosols (TCA) at an urban site of megacity Delhi, India for 5 years from January, 2012 to December, 2016. The annual average (± standard deviation) concentrations of PM2.5, OC, EC and TCA were 128 ± 81, 16.6 ± 12.2, 8.4 ± 5.8 and 34.5 ± 25.2 µg m−3, respectively. During the study, significant seasonal variations in mass concentrations of PM2.5, OC, EC and TCA were observed with maxima in winter and minima in monsoon seasons. Significant correlations between OC and EC, and OC/EC ratio suggested that vehicular emissions, fossil fuel combustion and biomass burning could be major sources of carbonaceous aerosols of PM2.5 at the sampling site of Delhi, India.
KeywordsPM2.5 Organic carbon Elemental carbon Total carbonaceous aerosols
The authors are thankful to the Director, CSIR-NPL, New Delhi and Head, Environmental Sciences & Biomedical Metrology Division (ES&BMD), CSIR-NPL, New Delhi for their encouragement. The authors also acknowledge the Ministry of Environment Forest and Climate Change (MoEFCC), New Delhi for providing partial financial support for this study (GAP-161632 Project).
- Begum BA, Akhter S, Sarker L, Biswas SK (2006) Gravimateric analysis of air filters and quality assurance in weighing. Nucl Sci Appl 15:36–41Google Scholar
- Directorate of Economics and Statistics (2016) Delhi Statistical Handbook. Registered vehicles in Delhi. Directorate of Economics and Statistics, Govt of National Capital Delhi. http://www.des.delhigovt.nic.in
- Fuzzi S, Baltensperger U, Carslaw K, Decesari S, Denier van der Gon H, Facchini MC, Fowler D, Koren I, Langford B, Lohmann U, Nemitz E, Pandis S, Riipinen I, Rudich Y, Schaap M, Slowik JG, Spracklen DV, Vignati E, Wild M, Williams M, Gilardoni S (2015) Particulate matter, air quality and climate: lessons learned and future needs. Atmos Chem Phys 15:8217–8299CrossRefGoogle Scholar
- Jones GSA, Jones A, Roberts DL, Stott PA, Williams KD (2005) Sensitivity of global scale climate change attribution results to inclusion of fossil fuel balck carbon aerosl. Geophys Res Lett 32:L14701Google Scholar
- Kanakidou M, Seinfeld JH, Pandis SN, Barnes I, Dentener FJ, Facchini MC, Dingenen R Van, Ervens B, Nenes A, Nielsen CJ, Swietlicki E, Putaud JP, Balkanski Y, Fuzzi S, Horth J, Moortgat GK, Winterhalter R, Myhre CEL, Tsigaridis K, Vignati E, Stephanou EG, Wilson J (2005) Organic aerosol and global climate modelling: a review. Atmos Chem Phys 5:1053–1123CrossRefGoogle Scholar
- Pope CA, Dockery DW (2006) Health effects of fine particulate air pollution: Lines that connect. JAPCA 56:709–742Google Scholar
- Sharma SK, Agarwal P, Mandal TK, Karapurkar SG, Shenoy DM, Peshin SK, Gupta A, Saxena M, Jain S, Sharma A, Saraswati (2017a) Study on ambient air quality of megacity Delhi, India during Odd-Even strategy. Mapan J Metro Soc India 32(2):155–165Google Scholar
- Simoneit BRT, Kobayashi M, Mochida M, Kawamura K, Huebert BJ (2004) Aerosol particles collected on aircraft flights over the northwestern Pacific region during the ACE-Asia campaign: composition and major sources of the organic compounds. J Geophy Res. https://doi.org/10.1029/2004JD004565 Google Scholar
- Sjogren S, Gysel M, Weingartner E, Balttensperger U, Cubison MJ, Coe H, Zardini AA, Marcolli C, Krieger UK, Peter T (2007) Hygroscopic growth and water uptake kinetics of two phase aerosol paricles consisting of ammonium sulfate, adipic and humic acid mixture. Aerosol Sci 38:157–171CrossRefGoogle Scholar
- Velali E, Papachristou E, Pantazaki A, Choli-Papadopoulou T, Argyrou N, Tsourouktsoglou T, Lialiaris S, Constantinidis A, Lykidis D, Lialiaris TS, Besis A, Voutsa D, Samara C (2016) Cytotoxicity and genotoxicity induced in vitro by solvent extractable organic matter of size-segregated urban particulate matter. Environ Pollut 218:1350–1362CrossRefGoogle Scholar
- Waked A, Favez O, Alleman LY, Piot C, Petit JE, Delaunay T, Verlinden E, Golly B, Besombes JL, Jaffrezo JL, Leoz-Garziandia E (2014) Source apportionment of PM10 in a north-western Europe regional urban background site (Lens, France) using positive matrix factorization and including pri-mary biogenic emissions. Atmos Chem Phys 14:3325–3346CrossRefGoogle Scholar