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i—t曲线是在一个汞滴上瞬时电流值随时间变化的曲线。i—t曲线的dlni/dlnt(β)值是极谱机理最为肯定的判据,然而要准确、迅速地测定β有不少困难;为了消除贫乏效应的影响需要采用特殊装置,用函数记录仪记录信号时存在响应速度跟不上的问题;另外,数据处理也较麻烦。为了克服这些困难,本文在Z80-Ⅱ型单板机—示波极谱仪系统上开发了i—t曲线测定及其数据处理功能,以便迅速获得β的准确结果。
The i-t curve is a curve of instantaneous current values over a mercury drop over time. The dlni / dlnt (β) value of the i-t curve is the most positive criterion for the polarographic mechanism, however, there are many difficulties in determining β accurately and rapidly; in order to eliminate the effects of poor effects, special devices are needed, There is a problem that the response speed can not keep up when recording the signal; In addition, the data processing is also troublesome. In order to overcome these difficulties, this paper developed i-t curve measurement and data processing function on the Z80-II single-board oscilloscope polarography system, in order to obtain the accurate result of β rapidly.