建立了两点电位滴定标定硝酸银标准溶液的方法。该方法通过记录两点电极电位值和相应的滴定体积,利用能斯特公式计算滴定等量点。实验结果表明:该方法操作方便,数据处理简单,精密度与准确度均较高。克服了容量分析终点难观察的缺点,与经典的电位滴定法相比分析速度有较大提高。 A method of potentiometric titration of silver nitrate standard solution was established. The method uses the Nernst formula to calculate the titration equivalent point by recording the electrode potential value of two points and the corresponding titration volume. The experimental results show that the method is easy to operate, the data processing is simple, the precision and accuracy are high. Overcomes the shortcoming that the end of capacity analysis is difficult to observe, and greatly increases the analysis speed compared with the classical potentiometric titration method.