摘要
使用氧化亚氮-乙炔火焰原子吸收光谱法,以LY-9802加氢催化剂为原料,硫酸、磷酸和水的混合物(三者体积比为3∶1∶4)为溶剂,研究了不同质量浓度的Al3+对Mo6+测定结果的影响。结果表明,随着Al3+质量浓度的增加,Mo6+吸光度不断增加,当Al3+质量浓度大于500 mg/L时,Mo6+吸光度趋于稳定;Na2SO4的加入不仅可以有效消除Al3+对Mo6+测定的干扰,而且还提高了仪器测定的检测限,测试结果的相对标准偏差小于2.92%。
The effect of Al^3＋ with different mass concentration on the testing result of Mo^6＋ was studied by nitrous oxide - acetylene flame atomic absorption spectrometry with hydrogenation catalyst LY- 9802 as material, and the mixture of sulfate acid, phosphate acid and water（ volume ratio 3/1/4 ） as solvent. The results showed that the Mo^6＋ absorbency increased with the mass concentration of Al^3＋ increasing. The Mo^6＋ absorbency got to stabi-lize when the Al^3＋ mass concentration was 500 mg/ L. The measurement precision of the apparatus was enhanced because of Na2SO4 adding. The relative standard deviation of testing results was less than 2.92%.
出处
《石化技术与应用》
CAS
2009年第6期555-558,共4页
Petrochemical Technology & Application
关键词
氧化亚氮-乙炔火焰原子吸收光谱法
加氢催化剂
钼
质量浓度
吸光度
nitrous oxide -acetylene flame atomic absorption spectrometry
hydrogenation catalyst
molybdenum
mass concentration
absorbency
