作　　者： ; ;

机构地区： 湖南大学

出　　处： 《湖南大学学报》 1991年第3期71-76,84,共7页

摘　　要： 季铵对电极的干扰受控于离子被膜相萃取的能力,证明logK_(ij)与季铵烷基链长度之间并不符合文献报道的简单线性关系,综合考虑苹取过程、弹性链模型与诱导效应的理论模式能较好地反映与预测电极的选择性,用五种电极的实验结果作了验证. Electrode selectivities toward quaternary ammoniums are controlled by the ability of the cation to be extracted into the membrane phase. We has proved in this paper theoretically that logK_(ij) can be expressed as function of alkyl chain length of quaternary ammonium,but the relationship is not linear. A theoretical relationship has been suggested and proved experimentally by using five electrodes of different kinds. Extraction, elastic radius of the quaternary ammonium and iuductivity effect are considered as the main factors which affect the electrode selectivity.

关 键 词： 季铵 离子选择电极 选择性 烷基链

领　　域： [理学] [理学]