真空碳酸盐法脱硫废液中亚铁氰化钾的测定

Determination of Potassium Ferrocyanide in the Vacuum Carbonate Desulfurization Waste Water

在酸性条件下,亚铁氰化钾与硫酸亚铁反应,经空气氧化生成蓝色络合物。采用分光光度法测定亚铁氰化钾含量,方法简便、快速、准确。测定真空碳酸盐法脱硫废液的加标回收率为95.61%至104.78%,相对标准偏差为0.83%和1.88%。该方法具有操作简便、快捷、精密度高、重现性好等特点。

In acid solution,potassium ferrocynide reacted with ferrous sulfate,and the reactant became blue in air.The potassium ferrocynide could be determinated by spectrophotometric method.The method was convenient,fast and accurate.The recovery rate for vacuum carbonate desulfurization waste water reached to 95.61%～104.78%,relative standard error was 0.83% to 1.88%.It showed that the method was quick,highly accurate,and easy to handle.