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Chalk: is it harmful to health?

28 November 2011

At long last, after millions of students in thousands of classrooms have freely and incautiously breathed trillions of breaths, there’s a report about the question: How much chalk dust enters the air when a teacher uses a blackboard?

The study, Assessment of Airborne Fine Particulate Matter and Particle Size Distribution in Settled Chalk Dust During Writing and Dusting Exercises in a Classroom, was done by Deepanjan Majumdar, DG Gajghate, Pradeep Pipalatkar and CV Chalapati Rao of the National Environmental Engineering Research Institute in Nehru Marg, India…..

Read more: http://www.guardian.co.uk/education/2011/nov/28/chalk-dust-health-research?newsfeed=true

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Written by csirindia

November 29, 2011 at 8:30 pm

Posted in NEERI

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