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As Strict Anti-Emission Norms Kick In, Finer Particles Are New Threat

Better technology may not end the pollution crisis. Rather, it would allow one to monitor even finer particles which would become new health threats. While currently particle effluents in air are PM10 and PM2.5, or particles with diameter less than 10 and 2.5 micrometers are the cause of major health crisis, sharper effluents like PM1 may become the next enemy, say environmental and health experts.

“Finer the particles, more dangerous they are — but there are no current thoughts on that. We don’t have standards on PM1 because of the lack of evidence. It is supposed to be much more dangerous for health,” Dr Gufran Beig, Project Director, System of Air Quality and Weather Forecasting And Research (SAFAR), told IANS. He said the focus may shift to the finer particles a few years from now.

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