论文部分内容阅读
Two novel 25,27-dihydroxy-26,28-bis(3-phenylthiapropoxy)-calixarene (3) and 25,27-dihydroxy-26,28-bis(3-phenylthia-propoxy)-5,11,17,23-tetra-tert-butylcalixarene (4) were synthesized for the evaluation of their ion-selectivity in ion-selective electrodes (ISEs). ISEs based on 3 and 4 as neutral ionophores were prepared, and their selectivity coefficients for Ag + (lg K pot Ag,M) were investigated against other alkali metal, alkaline-earth metal, aluminum, thallium (I), lead and some transition metal ions using the separate solution method (SSM). These ISEs showed excellent Ag + selectivity over most of the interfering cations examined, except for Hg 2+ and Fe 2+ having relative smaller interference (lg K pot Ag,M≤-2.1).
Two novel 25,27-dihydroxy-26,28-bis (3-phenylthiapropoxy) -calixarene (3) and 25,27-dihydroxy- 26,28-bis (3-phenylthia-propoxy) -tetra-tert-butylcalixarene (4) were synthesized for the evaluation of their ion-selective in-selective electrodes (ISEs). ISEs based on 3 and 4 as neutral ionophores were prepared, and their selectivity coefficients for Ag + pot Ag, M) were investigated against other alkali metal, alkaline-earth metal, aluminum, thallium (I), lead and some transition metal ions using the separate solution method (SSM). These ISEs showed excellent Ag + selectivity over most of the interfering cations examined, except for Hg 2+ and Fe 2+ having relative smaller interference (lg K pot Ag, M ≦ -2.1).