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采用自主研制的脉冲熔融-飞行时间质谱法可以同时测定金属中O,N,H和Ar。重点讨论质谱谱线的选择,信号获得以及数据处理和校准,并给出O,N,H和Ar 4种的检出限分别为0.021,0.060,0.002和0.002“g/g,线性范围分别为0.070～500”g/g,0.200～400“g/g,0.006～40”g/g和0.005～15“g/g。并利用不同样品对本方法的准确性和精密度进行了验证,实验结果与传统方法吻合。实验表明,本方法准确、有效,可同时测定4种气体元素O,N,H和Ar。
The pulse melting time-of-flight mass spectrometry developed by ourselves can simultaneously determine O, N, H and Ar in metals. The selection, signal acquisition and data processing and calibration of the mass spectrometry lines were discussed. The detection limits of O, N, H and Ar were given as 0.021, 0.060, 0.002 and 0.002 ”g / g, respectively Is 0.070 ~ 500 “g / g, 0.200 ~ 400” g / g, 0.006 ~ 40 “g / g and 0.005 ~ 15” g / g, and the accuracy and precision of this method The experimental results are consistent with the traditional methods.The experimental results show that the method is accurate and effective, and can simultaneously determine four kinds of gas elements O, N, H and Ar.