X. Wang, S. Guo, J. Fu, C. Chan, S. C. Lee, L. Y. Chan and Z. Wang, “Urban Roadside Aromatic Hydrocarbons in Three Cities of the Pearl River Delta, People’s Republic of China,” Atmospheric Envi-ronment, Vol. 36, No. 33, 2002, pp. 5141-5148.
 E. Ilgen, N. Karfich, K. Levsen, J. Angerer, P. Schneider, J. Heinrich, H. E. Wichmann, L. Dunemann and J. Begerow, “Aromatic Hy-drocarbons in the Atmospheric Environment: Part I. Indoor Versus Outdoor Sources, the Influence of Traffic,” Atmospheric Environment, Vol. 35, No. 7, 2001, pp. 1235-1252.
 TRIMFaTE, USEPA, “Trimfate Technical Support Document, Description of Chemical Transport and Transforma-tion Algorithm,” Office of Air Quality Planning and Standards, Research Triangle Park, NC, EPA - 453/D-99- 002B, Vol. II, 1999.
 E. Webster, J. Hubbarde, D. Mackay, L. Swanston and A. Hodge, “Development of Tools to Improve Exposure Estimation for Use in Ecological Risk Assessment: The Tapl3 Upgrade,” Report to environment Canada, CEMC Report 2003xx, Trent University, Peterborough, 2003.
 K. Ka-wamoto, M. MacLeod and D. Mackay, “Evaluation and Com-parison of Multimedia Mass Balance Models of Chemical Fate: Application of Euses and Chemcan to 68 Chemicals in Japan,” Chemosphere, Vol. 44, No. 4, 2001, pp. 599-612.
 C. Warren, D. Mackay, M. Whelan, K. Fox and Mass, “Balance Modeling of Contaminants in River Basins: Application of The Flexible Matrix Approach,” Chemosphere, Vol. 68, No. 7, 2007, pp. 1232-1244.
 H. Imura, “The Budgets of GHGs, Urban Air Pollutants and Their Future Emission Scenarios in Selected Mega-Cities in Asia (APN 2002-04),” Final Activity Report, Air Pollution Network, 28 February 2003.
 R. Duarte-Davidsona, C. Courage, L. Rushton and L. Levy, “Benzene in the Environment: An As-sessment of the Potential Risks to the Health of the Popula-tion,” Occupational and Environmental Medicine, Vol. 58, No. 1, 2001, pp. 2-13.
 V. Muzyka, S. Bogovski, A. Viitak and T. Veidebaum, “Alteration of Heme Metabolism in Lympho-cytes and Metal Content in Blood Plasma as Markers of Diesel Fuels Effects on Human Organism,” The Science of Total En-vironment, Vol. 286, No. 1-3, 2002, pp. 73-81
 R. J. Delfino, H. Gong Jr., W. S. Linn, E. D. Pllizzari and Y. Hu, “Asthma Symptoms in Hispanic Children and Daily Ambient Exposures to Toxic and Criteria Air Pollutants,” Environmental Health perspective, Vol. 111, No. 4, 2003, pp. 647-656.
 CalTOX? Version 1.5, “A Multimedia Total Ex-posure Model for Hazardous-Waste Sites,” Prepared by the University of California, Davis in Cooperation with Lawrence Livermore National Laboratory for the Office of Scientific Affairs Department of Toxic Substances Control California Environmental Protection Agency, Sacramento, California, 1994.
 DA 2002, “Soil Vapor Extrac-tion and Bioventing,” Manual No. 1110-1-4001,” Department of the army, US army corps of engineers Washington, DC., EM 1110-1-4001, Engineering and Design, Available at-url: http://www.usace.army.mil/publications/eng-manuals/em1110-1-4001/entire.pdf last accessed on 30th May 2008.
 MSC-E, “POP Model Intercomparison Study. Stage I. Comparison of Descriptions of Main Processes Determining POP Behavior in Various Environmental Compartments,” Ed-ited by MSC-E, Technical Report, January 2004,
 K. L. Foster, S. Sharpe, E. Webster, D. Mackay and R. Maddalen, “The Role of Multimedia Mass Balance Models for Assessing the Effects of Volatile Organic Compound Emissions on Urban Air Quality,” Atmospheric Environment, Vol. 40, No. 16, 2000, pp. 2986-2994.
 IPCC 2006, “IPCC Guidelines for National Greenhouse Gas Inventories,” Prepared by the National Greenhouse Gas Inventories Programme, H. S. Eggleston, L. Buendia, K. Miwa, T. Ngara and K. Tanabe, Eds., IGES, 2006.
 DoE, 2007. Climate Change Consequences Of VOC Emission Controls. AEAT/ENV/R/2475. Report to The Department for Environment, Food and Rural Affairs, Welsh Assembly Government, the Scottish Executive and the Depart-ment of the Environment for Northern Ireland ED48749102, Issue 3, September 2007.
 IPCC, “Climate Change 2001: The Scientific Basis,” Third Assessment Report of the Inter-governmental Panel on Climate Change Published for the In-tergovernmental Panel on Climate Change, Cambridge Uni-versity Press, Cambridge, 2001.
 G. Samanta, G. Chat-topadhyay, B. K. Mondal, T. Roychowdhuri, P. P. Chowdhury, C. R. Chanda, P. Banarjee, D. Lodh, D. Das and D. Chak-raborty, “Air Pollution in Calcutta During Winter - a Three Year Study,” Current Science, Vol. 75, No. 2, 1998, pp. 123-138.
 K. F. Ho, S. C. Lee, M. Gloria and Y. Chiu, “Characterization of Selected Volatile Organic Compounds, Polycyclic Aromatic Hydrocarbons and Carbonyl Compounds at a Roadside Monitoring Station,” Atmospheric Environment, Vol. 39, 2002, pp. 57-65.
 T. Ohura, T. Amagai and M. Fusaya, “Regional Assessment of Ambient Volatile Organic Com-pounds in an Industrial Harbor Area, Shizuoka, Japan,” Atmos-pheric Environment, Vol. 40, No. 15, 2006, pp. 238-248.
 H. Guo, K. L. So, I. J. Simpson, B. Barletta, S. Meinardi and D.R. Blake, “C1–C8 Volatile Organic Com-pounds in the Atmosphere of Hong Kong: Overview of At-mospheric Processing and Source Apportionment,” Atmos-pheric Environment, Vol. 41, No. 7, 2007, pp. 1456-1472.
 R. R. Hoque, P. S. Khillare, T. Agarwal, V. Shridhar and S. Balachandran, “Spa-tial and Temporal Variation of Btex in the Urban Atmosphere of Delhi, India,” Science of the Total Environment, Vol. 392, No. 1, 2008, pp. 30- 40.
 C. Dutta, D. Som, A. Chatterjee, A. K. Mukher-jee, T. K. Jana and S. Sen, “Mixing Ratios of Carbonyls and Btex in Ambient Air of Kolkata, India and Their Associated Health Risk,” Environ Monit Assess, Vol. 147, 2009, pp. 97-107.
 WHO, Air Quality Guidelines for Europe, 2nd ed., World Health Organization, Regional Office for Europe, Copenhagen, WHO Regional Publications, Euro-pean Series, No. 91, 2000. Available at url: http://www.euro.who.int/