以杯[4]芳烃衍生物和以二茂铁酮亚胺环汞化合物为载体的离子选择电极的研究

【作者】 葛明辉；

【导师】 周稚仙；

【作者基本信息】 郑州大学 ， 无机化学， 2001， 硕士

【摘要】 本文研究了以三种新的杯[4]芳烃衍生物为载体，癸二酸二辛酯（DOS）或邻苯二甲酸二辛酯（DOP）为增塑剂，四（4-氯）苯硼钾（KTpClPB）为离子定域体所制得的PVC膜钾离子选择电极。结果发现，在三种电极中以5，11，17，23-四叔丁基-25，26，27，28-四[2-（乙氧基羰基）苄氧基]杯[4]芳烃为载体所制得的电极（电极Ⅰ）性能最佳。其线性响应范围为1.0×10⁴mol/L～1.0×10^-1mol/L，斜率为57.5mv/decade，检测下限为3.16×10^-5mol/L，选择性系数亦优于以其它两种杯[4]芳烃衍生物为载体的钾离子选择电极。对Na⁺的选择性系数logK^pot_K,Na达-1.69。分别用电极Ⅰ、Ⅱ、Ⅲ对药品青霉素V钾中钾含量进行了测定，分析结果均与原子吸收法基本一致。更多还原

【Abstract】 A novel PVC membrane potassium ion-electrode has been investigated by using calix[4jarene derivatives as carriers, dioctyl sebacate(DOS) or dioctyl phthalate(DOP) as plasticizer and potassium tetra-p-chloro-phenyborate as ionic additive. The results showed that all these electrodes exhibits good Nernstian response charateristics towards K~. Among the three electrodes, the electrode based on 5,11,1 7,23-tetra-tert-butyl-25,26,27,28-tetrakis[o- (ethoxycarbonyl)benzyloxyljcalix[4]arene (electrode I ) exhibits the best charateristics towards K~. The linear response range of electrode I is lO~條0抦oUL. The corresponding slope is 57.5 mv/decade with correlation coefficient 0.99997 and the limit of detection was determined to be 3.16 X 1 O5moI/L potassium ; Its selectivity coefficient is also preferable to electrode H or III , the lOgKPOt~,~~ is -1.69. The content of K~ in Penicillin-V has been determined by potassium ion-selective electrodes I , II and III, respectively, which is consistent with that of atomic absorption spectrometric analysis, respectively.更多还原