Chromium contamination (IMAGE) Tokyo University of Science Caption Chromium contamination in wastewater can be mitigated by converting Cr(VI) to Cr(III) through a photochemical reaction involving copper complexes Credit Takashiro Akitsu, Tokyo University of Science 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.