Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.

• 溶液中加入铱元素进行铼同位素的质量分馏校正,在常规的溶液雾化进样条件下,采用同位素稀释法可准确测定纳克级的铼含量。