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在 Severinghaus 二氧化碳气敏电极的基础上,1969年设计提出气敏氨电极,不久即有 Orion-95-10、EIL 8002等氨电极商品出现。由于试液中各种离子均无法透过其气透膜或气隙,故气敏氨电极选择性是气体选择性挥发与离子电极本身选择性之加合,因此显著提高。对有关气敏电极的装制、实验方法及应用等基本问题,作一概述。一气敏电极的原理与分类气敏电极由一对电极——离子敏感电极(指示电极)与参比电极组成。这一电极对,一般是装置在气敏电极外套管内,管中充有内电解液,管的端部紧贴离子电极敏感膜,并装有气透膜(隔膜式气敏电极),使
On the basis of the Severinghaus carbon dioxide gas sensing electrode, a gas sensing ammonia electrode was proposed in 1969, and the ammonia electrode products such as Orion-95-10 and EIL 8002 soon appeared. As the test solution of various ions are unable to penetrate the gas permeable membrane or air gap, so the selectivity of gas-sensitive ammonia gas selective ionization of the ion selective addition of the electrode itself, and therefore significantly increased. Gas-sensitive electrode on the preparation, test methods and application of basic issues such as an overview. A gas sensing electrode principle and classification gas sensing electrode consists of a pair of electrodes - ion-sensitive electrode (indicator electrode) and the reference electrode. This pair of electrodes is generally mounted within a gas-sensing electrode outer tube filled with an internal electrolyte, the end of the tube being in close contact with the ion-sensitive membrane and a gas-permeable membrane (diaphragm-type gas sensing electrode)