ICP—OES方法测定RN型加氢催化剂中金属杂质含量

RN型加氢催化剂在石油化工领域有广泛应用，金属杂质含量的高低将直接影响催化剂的活性。本文建立了一种电感耦合等离子发射光谱法（ICP—OES）方法测定RN型加氢催化剂中Ca、Cu、Fe、Mg、Ti、Mn、K、Zn和Na金属杂质元素含量的分析方法。方法的测定范围在100mg／kg～10000mg／kg，加标回收率为90％～105％，相对标准偏差在10％以内。该方法操作简便，数据准确可靠，已应用于RN型加氢催化剂的日常分析中，精密度可满足对样品的分析要求。

Determination of Metal Impurities in RN Hydrotreating Catalyst by ICP-OES

RN hydrotreating catalyst is widely applied in the field of petroleum processing, and the metal impurities content can directly influence the activity of the catalyst. This paper describes a method for the determination of trace impurities of Ca, Cu, Fe, Mg, Ti, Mn, K, Zn and Na in RN hydrotreating catalyst by ICP- OES. The recovery was 90% - 105% and relative standard deviation was less than 10%, with a wide determination range from 100mg/kg to 10000mg/kg. This method is easy, sensitive and accurate. It has been successfully applied to determine the element content in RN hydrotreating catalyst for routine analysis.