| 摘要 |
A compound chemically sensitive element comprises a chemically sensitive assembly which is selectively sensitive to a specific ion or a specific substance in a material to be examined, and a pH sensor having an insulated gate field effect transistor structure, both of which are separately manufactured. The chemically sensitive assembly and the insulated gate of the pH sensor are electrochemically connected together by a conductive resin, thus improving the durability and the selectivity of the element. In this manner, limitations imposed upon the manufacture of MOS pH sensor is removed, permitting a wide variety of chemically sensitive films to be used.
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