机构地区: 广州大学化学化工学院
出 处: 《广州大学学报(自然科学版)》 2009年第5期50-52,共3页
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...
领 域: [电气工程]