摘要
本文提出了用对氯偶氮氯膦(CPApC)在0.2mol/L盐酸溶液中,于λ=678nm处测定铈与钇总量,而在同样酸度及草酸——焦磷酸钠联合掩蔽下测定铈量,由此可分别求得铈与钇的含量.测定铈与钇的表观摩尔吸光系数分别为:1.07×10~5,7.83×10~4.用此方法经过萃取分离后测定了镍基合金中的铈与钇,获得满意的结果.
A new method for simultaneous determination of Ce and Y with Chloropho-sphonazo-p-Cl has been developed.In the presence of ethanol, the total absorbances of Ce and Y complexes are measured at 678nm in 0.2mol/L hydrochloric acid solution, while the absorbance of Ce complex is measured at the same condition by masking Y with a mixture of oxalic acid and sodium pyrophosphate.The apparent molar absorptivities are found to be 1.07×10~5 for Ce and 7.83×10~4 for Y.The method has been used successfully for simultaneous determination of Ce and Y in nickel based alloys.
出处
《华东师范大学学报(自然科学版)》
CAS
CSCD
1993年第2期68-72,共5页
Journal of East China Normal University(Natural Science)
关键词
对氯偶氮氯膦
铈钇
分光光度法
chlorophosphonazo-p-Cl Cerium Yttrium spectrophotometry