镍钨非晶镀液中柠檬酸的氧化还原测定

Determination of Citric Acid in a Noncrystal Electroplate Solution by Oxidation and Reduction Method

柠檬酸在酸性溶液中能被MnO_4^-氧化,过量的MuO_4^-与I^-反应而释出游离I_2,然后用硫代硫酸钠标准溶液滴定,通过计算得到柠檬酸溶液的浓度。方法应用于电镀液中柠檬酸含量的测定,效果良好。

Citric acid can be oxidated by MnO4- in a acid solution,excessive MnO-4 is reacted with I-.The free I2 that is released in the solution is titrated by Na2S2O2 standard solution.The concentration of the citric acid is caculated. This msthod has been applied to determine the content of citric acid in electroplate solution.