IIT Kanpur study finds presence of PAH in Delhi’s air
1 min read 30 Dec 2015, 07:42 PM ISTApart from PAH, the report identifies the sources of suspended particulate matter PM 2.5, namely road dust, vehicles, domestic fuel burning and industrial point sources
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New Delhi: An Indian Institute of Technology, Kanpur study has found alarming details on Delhiās air pollution, including the presence of polycyclic aromatic hydrocarbons (PAH), that are extremely toxic chemicals and a product of emissions from diesel-run vehicles among others.
Apart from PAH, the draft report, that has been submitted to the Supreme Court, identifies the sources of suspended particulate matter PM 2.5, namely road dust (38%), vehicles (20%), domestic fuel burning (12%) and industrial point sources (11%).
Anumita Roychowdhury, head of Centre for Science and Environment (CSEās) clean air campaign, said that even traces of PAH, which is anyway found in āvery small quantity", can be extremely deadly and can reach harm to a foetus as well.
āPAH are toxic gases and a potent carcinogen, meaning exposure to them can cause cancer. It comes mainly from sources that use diesel as fuel which include diesel-run cars, gen sets, trash burning," she said.
The government has submitted the draft report of the study, that was commissioned in 2013, to the apex court. But it has not yet been made public. Sources in the government expressed their ādispleasure" over the report not being made public, which they said is resulting in it not getting public feedback and leaving room for speculations.
Pollution experts said that the presence of PAH is alarming also because it makes particulate matters such as PM 2.5 and PM 10, which are already present in large amounts in the cityās air, more deadly. āThis is because these particles, which can embed themselves deep in the respiratory system, can carry with the toxic gases inside inflicting more harm," Roychowdhury said.
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