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离子敏感场效应晶体管(Ion Sensitive Field—Effect Transistor简称ISFE T),是将离子选择电极(ISE)敏感膜与电子器件场效应管(Field—Effect Transistot简称FET)二者组合而成的一种新型化学敏感器。将测量电池电动势Ex的变化加于场效应管(FET)栅极上来控制漏电流Id大小的变化。在待测离子的一定活度范围内,Id与
Ion Sensitive Field-Effect Transistor (ISFE T) is a new type of combination of an ISE-sensitive membrane and an Field-Effect Transistor (FET) Chemical sensor. The change in the measured battery electromotive force Ex is applied to the gate of a field effect transistor (FET) to control the change in the magnitude of the leakage current Id. In a certain range of activity ions to be measured, Id and