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该文首先指出,由于生物膜具有特殊功能,当它与被测定物质接触后发生一系列变化而产生化学物质、热、光、声等现象,通过相应的检测装置如电化学、热、光、声检测装置发出电信号,这样就构成各种各样的生物传感器。它们已在医学等方面得到广泛应用。文章较详细地介绍了最早被人们利用的电极型传感器之一,酶电极。它是由固相酶膜和电化学装置构成的。其基本原理是:酶反应所生成或消耗的物质对电极具有活性,因而它的量可由电化学装置测定,从而间接测定酶基质的浓度。所用的酶一般
The paper firstly points out that due to the special function of the biomembrane, the phenomenon of chemical substances, heat, light and sound happens when it comes into contact with the substance to be measured. Through the corresponding detection devices such as electrochemistry, heat, light, The acoustic detection device emits electrical signals, thus constituting a wide variety of biosensors. They have been widely used in medicine and so on. The article introduces in more detail the earliest used electrode type sensor, enzyme electrode. It consists of a solid-phase enzyme membrane and an electrochemical device. The basic principle is that the substance generated or consumed by the enzyme reaction is active on the electrode and therefore its amount can be determined by an electrochemical device to indirectly determine the concentration of the enzyme substrate. The enzyme used in general