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将离子敏感场效应晶体管与药物敏感膜相结合，制成药物敏感效应晶体管传感器，测定丁氯喘片剂含量。以磷钨酸为电活性物质，制成PVC膜，对丁氯喘的线性响应范围为100～0．03mmol／L，斜率为59mV，适宜pH范围为3．0～8．0，检测下限为0．01mmol／L。
The ion sensitive field effect transistor and the drug sensitive membrane are combined to form a drug sensitive effect transistor sensor to determine the content of Dingchuanchuan tablet. With the phosphotungstic acid as the electroactive material, PVC membrane was prepared. The linear response range was 100 ~ 0.03mmol / L, the slope was 59mV and the suitable pH range was 3.0 ~ 8.0. The detection limit was 0.01 mmol / L.