Superoxide (IMAGE) University of Jyväskylä - Jyväskylän yliopisto Caption Superoxide can drive autocatalytic production of hydroxyl radicals in the presence of complexes of natural dissolved organic matter and iron. In the autocatalysis, hydroxyl radicals possibly transform aromatic moieties to hydroquinone-like moieties, which can reduce iron associated to them. Credit Luca Carena/The University of Torino 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.