原子吸收光谱法测定催化剂中的铈含量  

DETERMINATION OF CERIUM IN CATALYST BY ATOMIC ABSORPTION SPECTROMETRY

作　　者：严方[1] 高文苗[2] 罗文平[2] 李艳玲[2] 

机构地区：[1]中国石油大学化学化工学院,东营257061 [2]胜利石油管理局胜利采油厂,东营257000

出　　处：《化学分析计量》2008年第4期52-53,共2页Chemical Analysis And Meterage

摘　　要：采用高温酸消解法处理催化剂,然后用火焰原子吸收光谱法测定催化剂中铈含量,考察了温度、消解酸度等因素对测量结果的影响,优选出了最佳分析测试条件。铈的浓度在2.0～10mg/L范围内与吸光度呈良好的线性关系,线性相关系数为0.9997,方法的加标回收率为96%～101%,测量结果的相对标准偏小于2.2%(n=10),检出限为0.053mg/L。方法简便,灵敏度与准确度高。The content of cerium in FCC catalyst was determined by the flame atomic absorption spectrometry. The influence of the temperature and digestion acidity on the measurement results was studied, and the optimum condition was obtained. The concentration of cerium was linear with absorbency in the range of 2.0 -10 mg/L, r =0. 9997. The recoveries ranged from 96% to 101%. The relative standard deviations of detection results were less than 2.2% （ n = 10 ） and the detection limit was 0.053 mg/L.

关 键 词：原子吸收光谱法 铈 催化剂 

分 类 号：O657.31[理学—分析化学] O643.36[理学—化学]