高效液相色谱法测定镍镀液中的糖精钠和苯亚磺酸钠

建立了高效液相色谱法同时测定镍镀液中常用光亮剂苯亚磺酸钠和糖精钠的定量检测方法.为避免高盐背景对色谱分析的干扰,研究了样品的除盐处理方法.对方法的线性关系、回收率、精密度进行验证,并利用方法测定电镀液中苯亚磺酸钠和糖精钠,得到其实际消耗曲线:在400 A/m2的电流密度条件下苯亚磺酸钠4 h内平均消耗速率为18.25 ...

Determination of Sodium Saccharin and Sodium Benzenesulfinate in Nickel Plating Solution by High Performance Liquid Chromatography

A quantitative method of simultaneous determination of sodium benzenesulfinate and sodium saccharin in nickel plating solution by high performance liquid chromatography has been established. In order to avoid the interference of high salt background in chromatographic analysis, the desalting treatment method of samples was studied. The linearity, recovery and precision of the method were verified, and the actual consumption curves of sodium benzenesulfinate and sodium saccharin in electroplating solution were determined: under a current density of 400 A/m2 for 4 h, the average consumption rate of sodium benzenesulfinate was 18.25 mg/h and the average consumption rate of sodium saccharin was 4.05 mg/h. The results showed that the concentration of sodium benzenesulfinate and sodium saccharin had a good linear relationship with the peak area, all the correlation coefficients were greater than 0.993, the spiked recoveries were 91.20%~97.60%, and the relative standard deviations were 2.86%~4.75%. The method is of good repeatability, simple and rapid operation, and is suitable for the detection of two brighters in nickel plating solution.