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在分析化学的实验中,永停滴定是用仪器确定终点的一种分析方法,一般都是根据微电流计电流的变化来确定终点的。学生人数多,要购买很多微电流计比较困难。我们的pH计较多。将其用于永停滴定解决了这个困难。两个相同的电极在高阻抗的电场中,微电流的变化必然会引起电位的变化。pH计是高阻抗的电位计,可检测这种电位的变化。据此我们组装了十三具高阻抗电场,用pH计做检测器,在84、85、86级药学专科班中做
In analytical chemistry experiments, stop-and-go titration is an analytical method used to determine the end point of an instrument, usually based on changes in the current of the micro-galvanometer to determine the end point. The number of students, to buy a lot of micro-current meter more difficult. Our pH meter more. Using this for stop-and-go titration solved this difficulty. Two identical electrodes in a high-impedance electric field, micro-current changes will inevitably lead to changes in potential. The pH meter is a high impedance potentiometer that detects changes in this potential. Based on this, we assembled thirteen high-impedance electric fields, using a pH meter as a detector, in the 84, 85, and 86-level pharmacy classes