摘要
在铜－邻菲罗啉－乙醇水溶液中，采用单纯形最优化方法选择出偶氮氯膦Ⅲ与钇的最佳显色条件。在实验条件下，钇的摩尔吸收系数为１．０６×１０￣４ｍ￣２／ｍｏｌ，且在０－０．６ｍｇ／ｌ范围内服从比尔定律，变异系数为０．８７％。用此方法测定了中子活化岩石样品中￣（８８）Ｙ的化学回收率。
A sensitive andselective spectrophotometric method for the determination of chemical recov-ery of ￣(88)Y in neutron activated rocks is developed with modified simplex optirnization method.Thespectrophotometric method is based on the reaction between rare earth elements and chlorophos-phonazo Ⅲ in aqueous solution containing Cu, Phen and ethanol.Under the experimental condi-tions,the maximum absorption wavelength is at 680nm,the molar absorptivity is 1.06×10￣4m￣2/mol.The absorbance is linearly dependent on the concentration of yttrium when the concen-tration is below 0.6mg/l The variation coefficient is 0. 87%。
出处
《核化学与放射化学》
CAS
CSCD
北大核心
1995年第3期184-188,共5页
Journal of Nuclear and Radiochemistry
关键词
分光光度法
钇
偶氮氯膦
中子活化岩石
Simplex optimization method Spectrophotometric method Yttrium Chlorophosphonazo Ⅲ
