| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technology which enables an enriching recovery for concentrating metals after separating it from a metal-containing substance, and for utilizing the metals existing in trace amount, or enables preparation of a solution containing concentrated metals for high-accuracy analysis of the trace amount of metals. SOLUTION: The method for concentrating the metals comprises treating a metal-containing solid by microwave acidolysis, to make a solution including the metals which are contained in the solid, adding an extracting agent in the solution to form metal complexes, and then extracting metals from the solution by supercritical fluid extraction.</p> |
