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由双管差分输出型氢离子型敏场效应晶体管(pH-ISFET)与戊二醛交联的牛血清白蛋白青霉素酶膜经γ-氨基丙基三乙氧基硅烷硅烷化架桥结合组成FET型青霉素传感器,其使用寿命及贮存寿命分别大于4个月和6个月。在较适工艺条件下得到该传感器的响应特性为:在0.02mol/L、pH7.0的磷酸缓冲液中具有3～4mV/mmol的响应灵敏度和0.1～20mmol/L的线性范围,响应时间为30s。
A bovine serum albumin-penicillin membrane crosslinked with glutaraldehyde by a double-tube differential output type hydrogen ion sensitive field effect transistor (pH-ISFET) was bridged by γ-aminopropyltriethoxysilane silylation to form a FET Type penicillin sensor, its service life and shelf life are greater than 4 months and 6 months respectively. The response characteristics of the sensor under the proper process conditions were as follows: the response sensitivity of 3 ~ 4mV / mmol and the linear range of 0.1 ~ 20mmol / L in phosphate buffer solution of 0.02mol / L and pH7.0, the response time was 30s.