Ion chromatography detector based on solid-state ion-selective electrode array.
A variety of neutral carrier type ionophores for monovalent cations were employed to prepare solid-state cation-selective electrodes (SSEs) for use as a detector in single-column ion chromatography (IC). The polyurethane-based pseudoreference electrode made it possible to assemble an array type SSE detector for IC. An SSE-based detector provides not only the overall chromatogram for the separated ion species (monensin methyl ester-nonactin-based membrane), but also the enhanced chromatogram for specified ions of interest (valinomycin as K+ and nonactin for NH4+). This feature makes it possible to perform highly quantitative analysis with low detection limits even if the separation efficiency of the ion-exchange is not sufficient. Since SSE-based IC detectors are easily miniaturized and replaceable at low cost, they are an ideal component of a portable IC system.
Lee
D K
DK
Department of Chemistry, Kwangwoon University, Seoul, South Korea.
Lee
H J
HJ
Cha
G S
GS
Nam
H
H
Paeng
K J
KJ
D002414:Cations, Monovalent; D002852:Chromatography, Ion Exchange / Q000295:instrumentation*; D004566:Electrodes; D008094:Lithium / Q000032:analysis; D018942:Macrolides; D011188:Potassium / Q000032:analysis; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D012964:Sodium / Q000032:analysis; D014634:Valinomycin; D014867:Water / Q000737:chemistry
D002414:Cations, Monovalent; D018942:Macrolides; D000644:Quaternary Ammonium Compounds; D014867:Water; D014634:Valinomycin; D008094:Lithium; D012964:Sodium; D011188:Potassium; C050476:nonactin