【摘要】 在酸性条件下,以硫氰酸钾为三价铁的显色剂,在430 nm处,用分光光度法测定电镀镍及锌电解液,钢铁抛光液、磷化液、化学镀镍合金等金属表面处理液中铁的质量浓度;实验结果表明,该方法显色灵敏度高,杂质干扰小,操作简便快速,应用范围广,回收率可达到97.5%~101%。更多还原

【Abstract】 The iron content in solutions of nickelplating,zinc-plating,polishing,phosphating and nickel alloy electroless plating for iron and steel were determined by spectrophotometry with potassium thiocyanate as chromogenic agent of Fe3+ under acid conditions at 430 nm.The results indicated that this method was of higher chromogenic sensitivity and lower interference of dopant.The operation of this method is fast and convenient.And the recorvery rate can be up to 97.5%～101%.The method can be used extensively.更多还原