一絡合滴定中用来确定終点的方法頗多,按照上野景平的归类,可分为:金屬指示剂滴定、pH值变化指示剂滴定、氧化还原指示剂滴定、电位滴定、电导滴定、高頻滴定、光度滴定以及其他的物理化学滴定法,而在所有这些滴定方法中,以金屬指示剂确定終点为最普遍,发展也最快。近几年来金屬指示剂的发展情况主要表現 A complex titration method used to determine the end of a lot, according to the classification of UenoJingping can be divided into: metal indicator titration, pH change indicator titration, redox indicator titration, potentiometric titration, conductometric titration, High-frequency titration, photometric titration, and other physicochemical titrations. In all these titration methods, determination of the end point with the metal indicator is the most common and the fastest developed. In recent years the development of metal indicator of the main performance