Dr Mohan Mishra, former Professor of Medicine at Darbhanga Medical College Hospital, has identified alum, commonly known as phitkiri, as a purifier that could remove arsenic content from ground water almost completely and make it fit for drinking. Dr Mishra’s research study is available on ResearchGate, a US websiste, where scientists from all over the world post their findings and research works. The research outcome is particularly significant as Mishra had followed international paratmeter of the permissible limit of arsenic presence, that is, .01 mg litre to establish the purity of water.
He however cautioned that one should adopt this technic only after getting the water tested at reliable lab before and after purification.
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