Mercury Experiment (IMAGE) Rutgers University Caption Erik Björn of Umeå University in Sweden injects small amounts of enriched mercury isotopes into sediments for the experiment. Credit Sofi Jonsson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.