Assessment of source contribution to ambient air quality through comprehensive emission inventory, long-term monitoring and deterministic modeling

  • R. SivacoumarEmail author
  • R. Jayabalou
Original Paper


In the present study, air pollution monitoring was carried out in Chennai city continuously for more than 3 decades from 1978 to 2016 and air quality trends are established for planning mitigation measures. An extensive air pollution monitoring network consisting of 19 sampling locations covering traffic corridors and intersections, residential, commercial and industrial areas was operated to monitor dust and gaseous pollutants, toxic trace metals, polycyclic aromatic hydrocarbons (PAHs) and other criteria pollutants. Comprehensive emission inventory indicated contribution of pollution load is mainly from transport (80%) followed by domestic (13%), industry (4%), commercial activities (2%) and power back generators (1%). The air pollutant concentrations were high during day time in winter season at traffic corridors, intersections and industrial areas. The monitoring data indicated PM10, PM2.5 and PAHs concentrations were exceeding the limits due to vehicular emissions, road condition (paved and unpaved), construction, industrial and commercial activities. Carbon monoxide and hydrocarbon concentrations were high during traffic peak hours and near road corridors where traffic congestion is high. GM, ATDL and ISCST3 models were employed to assess the contribution of air pollutants from transport, domestic and industry sector, respectively. Performance evaluation of models was also carried out by comparing monitored and model-predicted concentration to assess model prediction accuracy.


Gaseous pollutants Particulate matter Toxic trace metals Dispersion models Model performance evaluation Pulmonary function and blood sample test 



The authors are grateful to the Director, National Environmental Engineering Research Institute, Nagpur, India, for the facilities made available for this work. They are also grateful to the Central Pollution Control Board (CPCB) (Grant No. G-1-2121), New Delhi, for sponsoring the project. They are also thankful to the Head, KRC, CSIR-NEERI, for checking the manuscript through iThenticate (anti-plagiarism software) and allotting manuscript no: CSIR-NEERI/KRC/2017/Jan/CZL/2 on January 06, 2017.

Supplementary material

13762_2018_2026_MOESM1_ESM.pdf (139 kb)
Supplementary material 1 (PDF 139 kb)
13762_2018_2026_MOESM2_ESM.doc (56 kb)
Supplementary material 2 (DOC 56 kb)


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Copyright information

© Islamic Azad University (IAU) 2018

Authors and Affiliations

  1. 1.CSIR - National Environmental Engineering Research InstituteChennaiIndia

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