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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Synthesis and characterization of monoazathiacrown ethers as ionophores for polymeric membrane silver-selective electrodes
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Synthesis and characterization of monoazathiacrown ethers as ionophores for polymeric membrane silver-selective electrodes

机译：单氮杂二氮杂冠醚作为高分子膜银选择性电极离子载体的合成与表征

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摘要

Nine monoazathiacrown ethers have been synthesized and explored as ionophores for polymeric membrane Ag+-selective electrodes. Potentiometric responses reveal that the ion-selective electrodes (ISEs) based on 2,2'-thiodiethanethiol derivatives can exhibit excellent selectivities toward Ag+. The plasticized poly(vinyl chloride) membrane electrode using 22-membered N2S5-ligand as ionophore has been characterized and its logarithmic selectivity coefficients for Ag+ over most of the interfering cations have been determined as <-8.0. Under optimal conditions, a lower detection limit of 2.2 x 10(-10) M can be obtained for the membrane Ag+-ISE.
机译：合成了九种单氮杂冠冕醚，并将其用作聚合物膜Ag +选择电极的离子载体。电位响应表明，基于2,2'-硫代二乙硫醇衍生物的离子选择电极（ISE）可以表现出对Ag +的优异选择性。表征了使用22元N2S5-配体作为离子载体的增塑聚氯乙烯膜电极，其在大多数干扰阳离子上对Ag +的对数选择性系数已确定为<-8.0。在最佳条件下，Ag + -ISE膜的检测下限为2.2 x 10（-10）M。

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