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介绍了X射线荧光光谱法测定加氢裂化催化剂中金属W和Ni含量的分析方法。考查了污染元素对W、Ni元素测定的影响,以氧化铝为载体配制标准样品,使标准样品与样品的基体基本一致,减少了基体效应的影响。待测元素的线性范围分别为:Ni 0.5%—5%;W 10%—30%,相关系数均为0.9999,测定结果的相对标准偏差小于1%。该方法的测定结果与原子吸收光谱法的测定结果相吻合。
The analytical method for the determination of metal W and Ni in hydrocracking catalysts by X-ray fluorescence spectrometry was introduced. The influence of contaminants on the determination of W and Ni elements was investigated. The standard sample was prepared with alumina as the carrier, which made the standard sample and the sample substrate basically the same, reducing the effect of matrix effect. The linear range of the tested elements are: Ni 0.5% -5%; W 10% -30%, the correlation coefficient is 0.9999, the relative standard deviation of the determination results is less than 1%. The results of this method are in good agreement with the results of atomic absorption spectrometry.