rare_earths2 (IMAGE) DOE/Oak Ridge National Laboratory Caption Jansone-Popova, right, uses an automated chromatography system to purify diglycolamide — an extractant used for rare-earth element separation. Popovs prepares samples for the analysis using a pipetting robot. Credit Genevieve Martin/ORNL, U.S. Dept. of Energy Usage Restrictions none License Original 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.