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本文建立了利用空气—乙炔火焰测定金属钨及三氧化钨中钼的方法。选择的分解试样试剂及干扰抑制剂比较有效地消除了基体钨及共存元素的影响,提高了测定灵敏度。本法测定钨存在下钼的特征浓度为0.40微克/毫升/1%。直线浓度范围可至20微克·毫升~(-1)。测定10~(-2)%含量范围钼的变动系数为2.4%,测定10~(-1)%含量范围钼的变动系数小于2%。
This paper established the use of air - acetylene flame tungsten and tungsten trioxide determination of molybdenum. The selected decomposed sample reagents and interference inhibitors can effectively eliminate the influence of matrix tungsten and coexisting elements and improve the measurement sensitivity. The present method is characterized by the presence of tungsten in the presence of molybdenum characteristic concentration of 0.40 micrograms / ml / 1%. Linear concentration range up to 20 micrograms · ml -1. The coefficient of variation of molybdenum in the range of 10% -2% was 2.4%, and the coefficient of variation of molybdenum in the range of 10% -1% was less than 2%.