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本课题在国内开拓了同位素稀释质谱(IDMS)用于化学计量溯源性探索研究,在对化学成份量溯源性有关理论与实践问题进行研究有所进展的前提下,实现与国际协作溯源接轨。选择具有天然同位素组成的Mg、Fe、Cd、Pb高纯试剂,用库仑法测定试剂的纯度,用ICP-MS测量杂质总量。当确认两者
This subject has pioneered the exploration of isotope dilution mass spectrometry (IDMS) for stoichiometric traceability in our country. Under the premise of the research on the theory and practice of traceability of chemical composition, we have realized the connection with international collaboration traceability. The high purity Mg, Fe, Cd, Pb reagent with natural isotopic composition was selected. The purity of the reagent was determined by coulometry and the total amount of impurities was measured by ICP-MS. When both are confirmed