流动注射微柱预分离富集荧光光度法测定肥料中的铈  

Determination of Cerium in Fertilizer by Fluorescence Spectrophotometry with Micro-Column Preconcentration in Flow Injection System

作　　者：王家恒[1] 张江义[1] 吴超[1] 帅琴[1] 汤志勇[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院,湖北武汉430074

出　　处：《中国稀土学报》2006年第z2期126-128,共3页Journal of the Chinese Society of Rare Earths

摘　　要：用抗坏血酸将Ce(Ⅳ)还原为Ce(Ⅲ),以多聚磷酸钠作为增强剂,建立了铈的流动注射荧光分析法,考查了各种因素对测定Ce的影响。此方法线性范围为2.0×10-9~1.2×10-8g.ml-1。采用流动注射微柱预分离富集测定了GBW07602标样和氨基酸微肥中的铈含量。测定结果与推荐值有良好的一致性。A method for determination of Ce with flow injection fluorescence analysis combined with micro-column preconcentration is developed by ascorbic acid as deoxidizer and sodium tripoly phosphate as fluorescence intensifier.The experimental conditions of this method were discussed.The liner range is(2.0×)10^(-9)～1.2×10^(-8) g·ml^(-1).The cerium in GBW07602 standard sample and amino acid micro-fertilizer was preconcentred and determined,and the results are accorded with the recommend value.

关 键 词：流动注射 铈 荧光光度法 稀土 

分 类 号：O657.3[理学—分析化学]