Proton Transport (image) Forschungsverbund Berlin Share Print E-Mail Caption Proton transport in water, in which the excess H+ or OH- charge moves in steps. With the model system 7-hydroxyquinoline it is possible to define the direction of the charge transport. Credit MBI Usage Restrictions The image may only be used with appropriate caption and credit. Share Print E-Mail 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.