一阶导数分光光度法同时测定记忆合金电镀液和电镀层中铁和钯  

Simultaneous Determination of Iron and Palladium in Electroplating Solution and Electroplated Layer by First Derivative Spectrophotometry

作　　者：王尊本[1] 王润棠[1] 

机构地区：[1]厦门大学化学系教育部材料和生命过程分析科学开放研究实验室,厦门361005

出　　处：《分析化学》1999年第3期312-315,共4页Chinese Journal of Analytical Chemistry

摘　　要：在酸性介质中,铁和钯分别与亚硝基R盐(NRS)络合形成绿色的Fe-NRS和红色的Pd-NRS,利用一阶导数分光光度法在水相中同时测定Fe和Pd.实验证明,两种络合物的摩尔吸光系数分别为1.94×10~4L·mol^(-1)·cm^(-1)(对铁)和1.63×10~4L·mol^(-1)·cm^(-1)(对钯);线性范围分别为0～5.6mg/L(对铁)和0 ～7.0mg/L(对钯);相对标准偏差均小于20%;回收率为96%～105%.本方法简便、快捷、准确、重现性好,适用于记忆合金电镀液及电镀层中Fe和Pd的同时测定.Fe and Pd can react with nitroso R salt (MRS) to form green Fe-NRS complex and red Pd-NRS complex individually in the acid medium. It can be determined in an aqueous phase by first derivative spectrophotometry directly. The molar absorptivities of the two complexes were found to be 1.94 × 104 L-mor-1·cm-1 for Fe and 1.63×104 L·mol-1-cm-1 for Pd. The linear ranges were 0 - 5.6 mg/L for Fe and 0-7.0 mg/L for Pd. The relative standard deviation was less than 2.0% , and the recovery was 96% -105%. The method is simple, rapid, reproducible and accurate. It has been applied to determine the Fe and Pd in the electroplating solution and electroplated layer of its alloy.

关 键 词：分光光度法 铁 钯 电镀液 电镀层 合金 记忆合金 

分 类 号：TQ153.2[化学工程—电化学工业]