Method for determining gelatin in copper electrolyte by using tri-n-alkylamine modified carbon paste electrode

The invention discloses a method for measuring the content of an additive gelatin in a copper electrodeposition solution, and belongs to the field of electrolytic copper foil manufacturing. According to the method, potassium dichromate (K2Cr2O7) is used as an oxidizing agent to oxidize and decompose gelatin in the copper electrodeposition solution, and then the residual dichromate ions (Cr2O7 < 2->) in the copper electrodeposition solution are selectively determined by adopting a stripping voltammetry analysis method. According to the peak current of Cr2O7 < 2->, the content of gelatin in the copper electrodeposition solution can be calculated. The detection method disclosed by the invention is simple, high in sensitivity, rapid and accurate, and has positive significance for effectively regulating and controlling the quality of the electrolytic copper foil in the production process. 本发明公开了一种铜电沉积溶液中添加剂明胶含量的测定方法，属于电解铜箔制造领域。本发明使用重铬酸钾（K2Cr2O7）作为氧化剂，将铜电沉积溶液中的明胶氧化分解，然后采用溶出伏安分析的方法选择性测定铜电沉积溶液中的剩余的重铬酸根离子（Cr2O72-）。根据C