Novel Carbon paste selective material for potassium detection

作者：Varodi C^*; Tosa N; Bogdan E; Grosu I; Muresan L M; Turcu I

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2010, 4(11): 1724-1727.

• Crown-ether
• Ionophore
• Optical spectroscopic methods
• Potassium cation detection
• Electrochemistry

Potassium ion plays a crucial role for the organisms life. Its detection is performed usually by potassium selective electrodes (PSE) having membranes made of a polymer matrix (such as PVC) incorporating macrocyclic compounds as ionophore. We propose a novel potassium selective material (PSM) based on a new synthesized crown-ether ionophore incorporated in carbon paste conductive matrix (PSM-CP). Electrochemical measurements proved the affinity of PSM-CP for the potassium cation, which is selectively bound by entrapping in the crown-ether cavity. The results are comparable with those obtained by using a PSE based on PVC-ionophore membrane.

• 出版日期2010-11