Abstract:

Hyderabad is the fifth largest city in India with a population of 3.7 million (2001 census). Due to its prominence as a major high-tech center, it is one of the fastest growing and most polluted cities in the region. In order to improve air quality and develop the local capacity to address this problem, the Andhra Pradesh Pollution Control Board, US National Renewable Energy Laboratory, US Environmental Protection Agency, and the World Bank funded the Hyderabad Source Apportionment Training and Demonstration Project.

Specific objectives of this study included:
Conduct a source apportionment study in Hyderabad
Determine the major sources contributing to elevated levels of PM10 and PM2.5
Improve and validate the existing emissions inventory
Train and build capacity in source apportionment analysis and application
Strengthen local environmental management and decision making capacity
Support industrial and transportation measures that integrate cleaner energy technologies with environmental management techniques.
Provide data to support integrated policies to reduce both PM and green house gas emissions

As part of this comprehensive program, an intensive monitoring study was carried out during November/December 2005. PM10 and PM2.5 filter samples were collected using low-volume samplers on a 24-hour basis at three sites representing background levels, mobile source impacts and, residential exposure. The collected samples were analyzed for mass, ions, trace metals, and organic and elemental carbon. Following this step, the chemical mass balance (CMB) receptor model was used to determine the nature and magnitude of the sources contributing to the elevated levels of PM. This paper reports the results of the source apportionment study and the efforts to reconcile these results with the existing emissions inventory.

Presentation: http://www.cleanairnet.org/baq2006/1757/docs/SW23_1.ppt

Full paper:

Sources of PM2.5 and PM10 in Hyderabad, India [.doc, 257.5Kb]