Assessment of traffic-generated gaseous and particulate matter emissions and trends over Delhi (2000–2010)

Developmental Biology

Pramila Goyal¹  Rati Sindhwani¹ 

[1] Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Hauz Khas, Delhi–110016, India$$

关键词: Air pollution;    emission inventory;    emission factors;    transport sector;    two wheelers;   

DOI  :  10.5094/APR.2014.051

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

Development and urbanization over the past decade has led to rapid increase in the population of Delhi, the metropolitan city of India. Consequently, there has been a tremendous increase in the number of vehicles, which are causing very high levels of air pollution. Vehicular emissions are becoming most predominant source of air pollution in Delhi. An annual emission inventory of road transport emissions of pollutants including carbon monoxide (CO), methane (CH₄), nitrogen oxides (NO_X), sulfur dioxide (SO₂), volatile organic compounds (VOCs), particulate matter (PM₁₀), lead (Pb) and hydrocarbon (HC), organic carbon (OC) and black carbon (BC) has been developed (for the period 2000–2010), for the Delhi region. Emissions have been estimated using emission factor and activity–based approach recommended by IPCC. The emissions of CO and NO_X have increased nearly 77% and 29% respectively over 2000 to 2010, whereas contribution of SO₂ has greatly reduced (~21%) due to phasing out of diesel driven buses and implementation of Bharat Stage–III norms to commercial vehicles. An appreciable increase in NO_X emissions has been observed after 2005, which might be due to the use of CNG fuel. Emissions of PM₁₀, OC and BC have decreased in 2001 and 2002, however these are continuously increasing after 2002 due to rapid rise in the annual rate of growth of registered vehicles in Delhi. Two wheelers (2Ws), which constitute 60% of total registered vehicles, have been found to be major contributors towards emissions of the pollutants considered in the present study.

【 授权许可】

Unknown   

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