分光光度法测定工作电解液中的微量铁离子  

Spectrophotometric determination of trace iron in working electrolyte

作　　者：陈姚[1] 张晓松[1] 于欣伟[1] 赵国鹏[2] 郑文芝[1] 

机构地区：[1]广州大学化学化工学院,广东广州510006 [2]广州二轻工业科学技术研究所,广东广州510663

出　　处：《广州大学学报（自然科学版）》2009年第5期50-52,共3页Journal of Guangzhou University:Natural Science Edition

基　　金：广州市教育局市属高校科技计划项目(62042)

摘　　要：利用邻菲啰啉分光光度法测定铝电解电容器工作电解液中的铁含量,检测波长为510 nm,在0.005～1μg.mL-1浓度范围内符合Lambert-Beer′Law,线性回归方程为A=0.199 6C-0.000 1,相关系数为0.999 6,最低检出限为0.000 5μg.L-1,RSD不超过2%,回收率为97.50%～101.25%.实验数据计算得到亚铁离子邻菲啰啉络合物的摩尔吸光系数ε为1.092×104L.mol-1.cm-1.Trace iron was determined by the measure of 1,10-Phenanthroline SpectroPhotometry in driving electrolyte of aluminum electrolytic capacitor,Lambert-Beer′ Law was obeyed over the rang of 0.005~1 μg·mL-1 at 510 nm.The standard working curve is linear regression equation A=0.199 6C-0.000 1,the correlation coefficient was 0.999 6,the lowest detection limit was 0.000 5 μg·L-1,RSD was less than 2%,and the recovery is 97.50%~101.25%.Molar absorptivity(ε) of [Fe(phen)3]2+ is 1.092×104 L·mol-1·cm-1 calculated by exp...

关 键 词：铁 分光光度法 工作电解液 

分 类 号：TM535[电气工程—电器]