The experimental conditions for the determination of copper and zinc in brass by EDTA complexometric titration were studied.A simple method for the continuous determination of copper and zinc in brass was established.The sodium thiosulfate was used for the coordination masking of copper ions.The zinc ions in solution were titrated with EDTA standard solution at pH 5.5using 1-(2-pyridineazo)-2-naphthol(PAN)as indicator.The content of zinc was calculated based on the consumed volume of EDTA standard solution....