酸度-光谱双线性数据矩阵秩消失因子分析法定量分析混合物中的铀  

Quantitative Analysis of Uranium in Mixtures With Rank Annihilation Factor Analysis of the Acidity-Spectra Bilinear Data Matrices

作　　者：廖力夫[1] 谢水波[2] 杨静[1] 袁金涛[1] 

机构地区：[1]南华大学化学化工学院,湖南衡阳421001 [2]南华大学建筑工程与资源环境学院,湖南衡阳421001

出　　处：《核化学与放射化学》2007年第3期156-160,共5页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金资助项目(10475038)

摘　　要：为探究不经分离直接定量分析含有钍、镧等元素混合物中的铀,以偶氮胂Ⅲ为显色剂,建立了酸度-光谱双线性数据矩阵秩消失因子分析法。结果表明,当pH=0.3～4.8,λ为600～680 nm时,方法的检出限为0.085 mg/L;当混合物中铀的质量浓度为1.19～4.76 mg/L时,相对标准偏差为1.5%～4.2%。用该方法对实际样品进行了测定,加标回收率为97.5%～103.4%。For searching direct quantitative analysis of uranium in grey mixtures containing thorium and lanthanum without any separate process, a rank annihilation factor analysis of the acidity-spectra bilinear data matrices with arsenazo Ⅲ as a chromogenic reagent was established. The range of acidity is pH=0.3-4.8 and the range of wavelength is 600-680 nm in the process of measure. The results show that the detection limit of the method is 0. 085 mg/ L and the relative standard deviations are from 1.5 % to 4.2 % when the mass concentrations of uranium in the mixtures are from 1.19 mg/L to 4.76 mg/L. The method was used for the determination of uranium in real mixtures with recoveries of standard added from 97.5% to 103.4%.

关 键 词：铀 秩消失因子分析法 酸度-光谱双线性数据矩阵 

分 类 号：O614.62[理学—无机化学]