Bloch R, Shatkay A, Saroff H A
Weizmann Institute of Science, Rehovaoth, Israel.
Biophys J. 1967 Nov;7(6):865-77. doi: 10.1016/S0006-3495(67)86626-8. Epub 2008 Dec 31.
Membranes fabricated from an inert polyvinyl chloride matrix impregnated with tributyl phosphate and with tributyl phosphate plus thenoyl trifluoroacetone were tested as electrodes specific for calcium ions. Both types of membrane exhibited a high specificity for calcium ions in the presence of sodium, magnesium, and barium ions. In the presence of perturbing ions, the usefulness of membranes is limited by both the transport of current and development of potentials by the interfering ion. An experimental method for evaluating these interfering quantities is presented.
由浸渍有磷酸三丁酯以及磷酸三丁酯加噻吩甲酰三氟丙酮的惰性聚氯乙烯基质制成的膜，作为钙离子特异性电极进行了测试。在存在钠离子、镁离子和钡离子的情况下，这两种类型的膜对钙离子均表现出高特异性。在存在干扰离子的情况下，膜的实用性受到电流传输和干扰离子产生电位的限制。本文提出了一种评估这些干扰量的实验方法。
