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本文报道合成了二烷基萘磺酸盐、二硝基萘酚磺酸盐、四苯硼、杂多酸盐和金属络卤酸盐等型三氟拉嗪离子缔合物,测出其在水-膜溶剂体系的萃取常数均大于10~6,电极斜率接近理论值。系统地研究了它们的电极性能,发现:电活性物种类对电极性能(响应斜率、能斯特响应范围、选择性)虽有影响,但并不显著。相反,电极膜内外溶剂的介电常数有显著影响。对于同类溶剂,介电常数大时,萃取常数与电极斜率也大;液膜电极:S=68.5—95.7ε~(-1)(正烷醇),S=69.7—62.0ε~(-1)(邻苯二甲酸酯)。对同类底液:S=101.5—3276ε~(-1)(甲、乙醇-水体系),S=130.0—5500ε~(-1)(丙酮-水体系),关系式不受电极结构的影响。
This paper reports the synthesis of dialkylnaphthalene sulfonate, dinitronaphtholsulfonate, tetraphenyl boron, heteropolyacid salts and metal complexes such as trifluorohydrazinium ion complexes, measured in The extraction constant of water-membrane solvent system is more than 10 ~ 6, the slope of the electrode is close to the theoretical value. Systematically studied their electrode properties and found that: Electroactive species on the electrode performance (response slope, Nernst response range, selectivity) Although the impact, but not significant. In contrast, the dielectric constant of the solvent inside and outside the electrode film has a significant effect. For the same solvent, the extraction constant and the slope of the electrode are also large when the dielectric constant is large. The liquid membrane electrode is S = 68.5-95.7ε ~ (-1) (n-alkanol), S = 69.7-62.0ε ~ (-1) (Phthalate). For the same type of substrate solution, S = 101.5-3276ε -1 (A, ethanol-water system) and S = 130.0-5500ε -1 (acetone-water system), the relationship is not affected by electrode structure.