| 摘要 |
<p>A process for the adsorptive removal of one or more impurity elements, selected from the group which consists of: arsenic, antimony and bismuth, from an aqueous solution containing same in which the solution is contacted with a water-insolu-ble or low-solubility salt of phosphoric acid or a phosphoric acid ester (phosphate ester) or both on a porous substrate.</p> |
