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1引言酸度的测定在工业、农业、生物、医学、环保等领域有着十分重要的意义，目前广泛采用玻璃电极测量。然而，玻璃电极存在一定的不足，由于它是采用极薄的玻璃膜作为H+的敏感膜，致使玻璃电极极易破碎，难以适宜于强搅拌体系和对玻璃有腐蚀作用的体系，如含氟体系。故多年来
1 Introduction Determination of acidity in industry, agriculture, biology, medicine, environmental protection and other fields has a very important significance, the current extensive use of glass electrode measurements. However, the glass electrode has some shortcomings. Because it uses a very thin glass film as a sensitive film of H +, the glass electrode is easily broken and is difficult to be suitable for a strong stirring system and a glass corrosive system such as a fluorine-containing system . So many years