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Issue 54
, 2014
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Heavy metals in Hooghly on the rise

Source: The Statesman, Date: , 2014

A group of scientists has found that the level of heavy metals such as zinc, lead and mercury is on the rise in river Hooghly due to the impact of climate change. The rise in presence of heavy metals in the river water, the scientists say, lead to accumulation of such metals in the endemic fishes and could enter the human body through food chain. The researchers were surprised after they noticed a rise in heavy metals in the surface water of lower Ganges despite less industrial activities in the coastal zone. "Our present research confirms the role of acidification in regulating the level of heavy metals in the Hooghly estuarine system," said Professor Abhijit Mitra, former head of the marine science department of Calcutta University. “The human-induced increase of carbon-dioxide which causes climate change has in turn caused a substantial decrease of pH in coastal waters," he said.

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