Novel electrochemical sensor for the determination of potassium ions based on silver diethyldithiocarbamate as sensor material

Oguz Özbek, Mehmet Alperen Şahin
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Abstract

Potassium is one of the macro minerals necessary for the cellular functions, obtained from foods. Excessive amounts of potassium can cause health problems. Determination of potassium in various samples, especially food and drug samples, is an important task. In this study, we developed a new potentiometric sensor selective to potassium ions. The sensor had a detection limit of 8.64 × 10-5 M in the concentration range of 1.0 × 10-1–1.0 × 10-4 M and a near–Nernstian behavior of 49.0 ± 4.32 mV/decade. The sensor exhibited a response time of 10 s, as well as good selectivity, good repeatability, and a wide pH working range (4.0–11.0). The developed sensor was successfully applied to a drug sample and different water samples with very high recoveries (>91.20 %).

Abstract Image

基于二乙基二硫代氨基甲酸银传感器材料的新型钾离子测定电化学传感器
钾是细胞功能所必需的大量矿物质之一,可从食物中获得。过量的钾会导致健康问题。各种样品,特别是食品和药品样品中钾的测定是一项重要的工作。在这项研究中,我们开发了一种新的选择性钾离子电位传感器。该传感器在1.0 × 10-1-1.0 × 10-4 M浓度范围内的检出限为8.64 × 10-5 M,近能态为49.0±4.32 mV/ 10年。该传感器的响应时间为10 s,具有良好的选择性、重复性和较宽的pH工作范围(4.0-11.0)。该传感器成功地应用于药物样品和不同水样,具有很高的回收率(91.20%)。
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