Impact of rice crop residue burning on levels of SPM, SO₂ and NO₂ in the ambient air of Patiala (India)

Nirankar Singh, Susheel K. Mittal, Ravinder Agarwal, Amit Awasthi and Prabhat K. Gupta

International Journal of Environmental Analytical Chemistry 90 ( 10 ): 829 - 843 , 2010