Peer Reviewed: Ion Chromatography Retrospective

Haddad, Paul R.

doi:10.1021/ac012440u

Cited by 21 publications

(6 citation statements)

References 22 publications

(24 reference statements)

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“…[1][2][3][4][5][6][7][8][9][10][11][12] Most ion chromatographs with an electrical conductivity detector (ECD) are equipped with a suppressor (such as a column-type suppressor, a micromembrane, 6 or an electrolytically regenerated suppressor used as both a membrane and on ion-exchange resin [6][7][8][9][10][11][12][13] ). The performance of the suppressor determines the detection limit of IC.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Suppressor for the Ion Chromatography of Inorganic Cations

et al. 2014

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This paper reports on a new suppressor that can be used in the ion chromatography (IC) of inorganic cations. The space in which the electrode is set on both sides of the device is separated into three cells using anion-and cation-exchange membranes. Each of the cells is packed with either an anion-or cation-exchange resin. Anions in the eluent and injected sample are removed by electrical regeneration, based on the electrokinetic phenomenon on both the surface of the ion-exchange resins and the membranes. The electrical conductivity of the suppressed eluent reaches a level similar to that of ultrapure water; therefore, a cation detection limit of sub-ppb order is achieved in IC using the device as a suppressor.

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Section: Introductionmentioning

confidence: 99%

Development of a New Suppressor for the Ion Chromatography of Inorganic Cations

et al. 2014

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] Most ion chromatographs are equipped with a suppressor and an electric conductivity detector (ECD); suppressors, such as a micromembrane [6][7][8] and an electrolytically regenerated packed-bed suppressor, [9][10][11][12][13][14] are important in that it determines the detection limit in IC. [1][2][3][4][5][6][7][8][9][10][11] A suppressor made available by Dionex in 2001 works with high eluent concentrations, and has a very low dead volume. 12 To improve the commercially available suppressor, we developed a new suppressor, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Development of an Anti-Analyte Ion Remover Used for Ion Chromatography: Part 1. Examination of a Device for Anion Analysis

et al. 2012

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“…IC is also commonly used for cation determinations, but it plays a less central role for such analyses due to the availability of more sensitive and selective spectroscopic methods of analysis (such as inductively coupled plasma–mass spectrometry). Since its introduction, IC has enjoyed a myriad of advancements that have improved the speed and efficiency of separations, broadened the number and complexity of samples that can be analyzed, enabled gradient analysis, and expanded the methods of detection. , In spite of these advances, the most common detection method for IC remains the same as when it was first introducedsuppressed conductivity measurement. − …”

mentioning

confidence: 99%

Universal Anion Detection by Replacement-Ion Chromatography with an Atmospheric-Pressure Solution-Cathode Glow Discharge Photometric Detector

et al. 2012

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A new method of detection for ion chromatography (IC) is described that couples replacement-ion chromatography (RIC) with an atmospheric-pressure solution-cathode glow discharge (SCGD). In the new instrument, a conventional suppressed IC arrangement is followed by a "replacement column" that consists of a cation-exchange micromembrane suppressor continuously regenerated with Li(2)SO(4). In this arrangement analytes are stoichiometrically converted to Li salts when they pass through the replacement column and are introduced into the SCGD, where they are detected indirectly by atomic emission spectrometry. Though found to be unsuitable for cation determinations, the SCGD-RIC instrument shows good repeatability (<3.5% peak area relative standard deviation), approximately 4 orders of linear dynamic range, universal calibration (similar molar sensitivity for anions of the same charge), and detection limits between 0.08 and 0.64 μg·mL(-1) (25-μL injection) for several mono- and divalent anions. Deviations from the universal calibration were also observed and are critically evaluated. Optimal operating conditions are described, analytical figures of merit are presented, and background sources present in the system are characterized and explained.

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Peer Reviewed: Ion Chromatography Retrospective

Cited by 21 publications

References 22 publications

Development of a New Suppressor for the Ion Chromatography of Inorganic Cations

Development of a New Suppressor for the Ion Chromatography of Inorganic Cations

Development of an Anti-Analyte Ion Remover Used for Ion Chromatography: Part 1. Examination of a Device for Anion Analysis

Universal Anion Detection by Replacement-Ion Chromatography with an Atmospheric-Pressure Solution-Cathode Glow Discharge Photometric Detector

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