Determination of 43 Trace Elements in Nickel-Based Single Crystal Superalloy by Fast Flow-Glow Discharge Mass Spectrometry

Mass spectrometry interference and isotope selection of 43 trace elements in nickel-based single crystal superalloy were studied based on fast flow-glow discharge mass spectrometry. This method was used to evaluate the purification level of high-performance nickel-based single crystal superalloy. The solid samples were injected directly. The isotopes and resolution modes of the analytical elements were determined by the calculation judgement of mass spectrum interference in complex matrix, and the interference elimination of the coexisting elements. The corresponding standard materials were used to correct the relative sensitivity factors of the analytical elements. The 43 trace elements of nickel-based single crystal superalloy were then determined by fast flow-glow discharge mass spectrometry. As shown by the results, the detection limits (3s) of the trace elements were in the range of 1.04×10^-7%-6.60×10^-3%, most of which reached 0.1 μg·g^-1 level. The internal control standard material DD6-6# was determined 6 times, with RSDs of the determined values in the range of 0.59%-13%. The analytical results of this method were consistent with those of different analytical methods and standard materials.