Harrow J, Janata J, Stephen R L, Kolff W J
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Miniature, rugged Chemfet sensors have been developed by coating field-effect transistors with ion-sensitive membranes. These sensors have been combined with a flow injection analysis manifold to demonstrate feasibility of a small portable system capable of simultaneous determinations in 10 seconds of hydrogen, potassium and calcium ion activities in 20 microliters samples of whole blood, serum or dialysate.
通过用离子敏感膜涂覆场效应晶体管,已开发出微型、坚固的化学场效应晶体管(Chemfet)传感器。这些传感器已与流动注射分析流路相结合,以证明一种小型便携式系统的可行性,该系统能够在10秒内同时测定20微升全血、血清或透析液样品中的氢离子、钾离子和钙离子活性。