Shin JH, Lee HL, Cho SH, Ha J, Nam H, Cha GS. Characterization of epoxy resin-based anion-responsive polymers: applicability to chloride sensing in physiological samples.
Anal Chem 2005;
76:4217-22. [PMID:
15253666 DOI:
10.1021/ac049973y]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potentiometric properties of an epoxy resin-based anion-responsive polymer and its feasibility as a chloride sensing membrane are described. The response mechanism of the epoxy resin-based membrane is studied by varying the types and contents of epoxy components (e.g., resin, hardener, diluent, and plasticizer). It is found that epoxy resins cured with polyamine-type hardeners have excellent characteristics as chloride-sensing membranes, in terms of their selectivity, stability, sensor lifetime, and adhesion for constructing an all-solid-state sensing device. In addition, effects of the diluent or plasticizer added in an epoxy resin/hardener system on the potentiometric behaviors are investigated. To demonstrate the practical analytical utility of the epoxy resin-based electrodes, chloride levels in various controls and biological specimens (e.g., human sera and whole blood) are determined with a flow-cell system.
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