用比色法测定镀镍电极镍磷含量  

ANALYSIS OF THE CONTENT OF NICKEL AND PHOSPHOR IN PLATINIZED NICKEL ELECTRODE

作　　者：冯淑德[1] 

机构地区：[1]鞍山科技大学化工学院,鞍山114044

出　　处：《化学分析计量》2005年第5期18-20,共3页Chemical Analysis And Meterage

摘　　要：镍和丁二酮肟在pH=10的缓冲介质中,形成丁二酮肟红色络合物,选择530 nm为测定波长,表观摩尔吸光系数为1.74×105L/mol·cm,稳定时间可达3 h.采用磷钼酸铵比色法测定磷,最大吸收峰位于700nm,表观摩尔吸光系数为2.70×105 L/mol·cm.镍和磷测量的线性范围均为0～100μg/mL.将该方法用于镀镍电极的镍磷含量分析,测定结果的相对标准偏差不大于5.0%.In the buffer solution of pH = 10, nickel reacted with diacetyldioxime to form red complex, the molar absorbancy index was 1.74 × 10^5 L/（ mol · cm） in the absorbance wavelenth of 530 nm. The stability time was 3 hours. The content of phosphor was determined with the ammonium molybdophosphate colorimetry, the wawelength of absorption maximum was 700 nm, and the molar absorbancy index was 2.70 × 10^5 L/（ mol · cm）. The linear range of nickel and phosphor was 0 - 100 μg/mL. The method was effective in analysing the content of nickel and phosphor of the platinized nickel electrode, and the relative error range to the standard was not more than 5.0%.

关 键 词：镀镍电极 分析 镍 磷 比色法测定 镍电极 磷含量 表观摩尔吸光系数 相对标准偏差 丁二酮肟 

分 类 号：O657.34[理学—分析化学] TS227[理学—化学]