火花源质谱法具有灵敏度高,能同时测定多种痕量元素等特点,在国民经济和科学研究部门皆有应用。近年来建立了一种新的定量分析方法:多元素同位素稀释-火花源质谱法(MID-SSMS)。此法优点是不需标准样品,同位素丰度比的测定值很少受实验参数的影响,感光板乳剂灵敏度不均匀性的影响较小。 Spark source mass spectrometry with high sensitivity, can simultaneously measure a variety of trace elements and other characteristics, in the national economy and scientific research departments are all applications. In recent years, a new quantitative analysis method has been established: multi-element isotope dilution-spark mass spectrometry (MID-SSMS). The advantage of this method is that no standard sample is required. The measured value of isotope abundance ratio is less affected by the experimental parameters, and the influence of the sensitivity of the emulsion on the plate is less affected.