我们将破损的玻璃电极 ,经简单处理改制成银电极 ,应用于自来水中氯的测定 ,和市售 MC型号银电极相比 ,电位滴定误差在 1 %以内 ,可用于教学实验中氯含量的测定。1　试剂和仪器Ag NO3标准溶液 :0 .0 50 0 mol/L 水溶液 ,用Na Cl溶液 ,按常规方法标定 ;p HS- 2型酸度计 ,双盐桥 We will break the glass electrode, a simple process converted into silver electrode, used in the determination of chlorine in tap water, and commercially available MC model silver electrode, the potential titration error of less than 1%, can be used for teaching experiments Determination of chlorine content . 1 Reagents and equipment Ag NO3 standard solution: 0. 0 0 0 0 0 mol / L aqueous solution, with Na Cl solution, according to the conventional method calibration; p HS-2-type pH meter, double salt bridge