A novel method for the detection and measurement of inorganic cations from the frequency of electrical oscillations
A novel method for the detection and measurement of inorganic cations from the frequency of electrical oscillations
复制标题
一种通过电振荡频率检测和测量无机阳离子的新方法
DOI：
10.1016/0021-9797(86)90192-x
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
H. Terada
中科院分区：
文献类型：
--
作者：
K. Yoshikawa;T. Omochi;T. Fujimoto;H. Terada
在不同浓度的NaCl、KCl、MgCl 2和CaCl 2下，测量了连接到外部电路并浸入十二烷基硫酸钠（SDS）水溶液中的两个铂电极之间的电振荡。在20 ~ 400 μM范围内，振荡频率与离子浓度的对数几乎呈线性关系。与Mg ~（2+）和Ca ~（2+）呈良好的线性关系。通过对电极的适当修饰，该方法可用于各种离子化学品的定量和选择性检测。
Electrical oscillations across two platinum electrodes connected to an external circuit and immersed in aqueous solutions of sodium dodecyl sulfate (SDS) were measured at various concentrations of NaCl, KCl, MgCl2, and CaCl2. The frequency of oscillations was found to change almost linearly with the logarithm of the concentration of these ions between about 20 and 400 μM. Especially good linearities were observed with Mg2+and Ca2+. With suitable modifications of the electrodes, this method should be useful for quantitative and selective detections of various ionic chemicals.