摘要
采用5-Br-PADAP光度法测定银锑合金镀液中的微量锑。优选出最佳测量波长。研究了酸度、碘化钾浓度、丙酮和显色剂浓度以及各种干扰离子对测定的影响。锑含量介于0-12μg／10mL范围内遵守比尔定律。方法具有较高的准确度，平均加标回收率为98．9％。
Micro antimony in silver - antimony alloy plating bath was determined by spectrophotometric method using 2 - （ 5 - bromo - 2 - pyridyazo ） - 5 - diethylaminophenol as chromogenic agent, and optimal measuring wavelength was selected . The effects of acidity , concentration of potassium iodide , acetone and chromogenic agent , and various interfering ions were studied . The relationship between absorbance and antimony content followed Beer＇s law provided that antimony content was among 0 and 12μg / 10 mL. The method has high accuracy with recovery of 98.9 %.
出处
《涂料涂装与电镀》
2005年第5期33-35,共3页
Coatings Painting & Electroplating
关键词
银锑合金
镀液
微量锑
5-Br-PADAP光度法
determination of antimony
spectrophotometric method
silver - antimony alloy plating bath
