LEAD SELECTIVE ELECTRODES BASED ON THIOAMIDE FUNCTIONALIZED CALIX[4]ARENES AS IONOPHORES
LEAD SELECTIVE ELECTRODES BASED ON THIOAMIDE FUNCTIONALIZED CALIX[4]ARENES AS IONOPHORES
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DOI：
10.1016/0003-2670(94)00266-5
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发表时间：
1994-11-30
影响因子：
6.2
通讯作者：
REINHOUDT, DN
中科院分区：
文献类型：
--
作者：
MALINOWSKA, E;BRZOZKA, Z;REINHOUDT, DN
研究了以二硫酰胺和四硫酰胺功能化杯芳烃为离子载体的铅选择性电极。铅离子在10(-6)~ 10(-2)M的活度范围内，Pb(II)-响应函数呈现近似于理论的能氏斜率。对于这两种离子载体，我们观察到铅优于其他阳离子。以四硫酰胺衍生物（离子载体1）、四氯苯基硼酸钾和邻硝基苯辛基醚为增塑剂的膜的增塑剂效果最好。与商用固态铅选择性电极相比，该电极对铜、锌和镉离子的选择性大大提高。
Lead selective electrodes based on a di- and tetrathioamide functionalized calix[4] arene as ionophores were investigated. The Pb(II)-response functions exhibited almost theoretical Nernstian slopes in the activity range 10(-6)-10(-2) M of lead ions. For both ionophores a preference for lead over other cations was observed. The best results were obtained for membranes containing the tetrathioamide derivative (ionophore 1), potassium tetrakis(4-chlorophenyl)borate and o-nitrophenyl octyl ether as a plasticizer. This electrode showed greatly improved selectivity over copper, zinc and cadmium ions as compared with commercial solid-state lead selective electrodes.