Erik Björn, Umeå University (IMAGE)

Umea University

Erik Björn, Umeå University

Caption

Erik Björn is injecting small amounts of isotopically enriched mercury to the sediments for the mesocosm experiment. By adding stable (not radioactive) isotopes of mercury the scientists could trace how methylmercury was formed and accumulated in plankton in the mesocosm systems.

Credit

Sofi Jonsson

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