用銀-氯化銀作ISFET參比電極的可行性研究
STUDY OF FEASIBILITY OF Ag-AgCl ELECTRODE AS REFERENCE ELECTRODE FOR ISFET
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摘要: 本文敘述了用銀-氯化銀作參比電極的復(fù)合離子敏感場效應(yīng)晶體管的制備、原理和測量結(jié)果。通過實驗和理論分析,提出了用無液接的銀-氯化銀電極作參比電極的可行性和克服其不穩(wěn)定性的途徑;并對用銀-氯化銀參比電極測量Na+,Ca++等陽離子時,敏感場效應(yīng)晶體管不符合能斯特響應(yīng)的現(xiàn)象進行了解釋。
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關(guān)鍵詞:
- 離子敏感場效應(yīng)晶體管; 靈敏度; 參比電極; 能斯特響應(yīng)
Abstract: The preparation, principle and measured results of complex ion sensitive field effect transistor (ISFET) with Ag-AgCl reference electrode are described. Through theoretical analysis and experiments, the feasibility of Ag-AgCl reference electrode which does not contact with solution and the way of overcoming its unstability are put forward. It is explained that why the effect appearing in the ISFET does not conform to Nernst effect, when Na+, Ca++ cations etc. are measured with Ag-AgCl reference electrode. -
S. Shoji, M. Esashi, T. Masuo, Sensors and Actuators, S (1984), 89-99.[2]黃德培,沈子琛,關(guān)國梁等編著,離子選擇電極的原理及應(yīng)用,化學(xué)工業(yè)出版社,北京,1982, pp. 158-165.[3]M.惠特菲爾德著,用于天然水分析的離子選擇電極,科學(xué)出版社,北京,1977, pp. 25-26.[4]謝聲洛編著,離子選擇電極分析技術(shù),化學(xué)工業(yè)出版社,北京,1985, pp. 113-120. -
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