Water pollution monitoring. Scientist collects a sample of water from a discharge pipe,in this case during research into mercury contamination. Mercury is a toxic metal which forms water-soluble salts. If mercury is consumed over a period of time it can cause irreversible damage to the brain,liver,and kidney. This pipe was found to be discharging up to 1.09 milligrams of mercury per litre of water; these levels are up to 1 million times higher than those found in unpolluted water. Photograph of Dr David Santillo,a Greenpeace researcher,at a pipe from the Chemplast Sanmar PVC complex at Mettur Dam in Tamil Nadu,India | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Edwards, Bob |
Taille de l’image : | 3457 px × 5099 px |
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