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ID 115180
Title Alternative
Axial Dispersion-Reduced Cation Exchange Module and Its Application to Ion Chromatography
Author
Okamoto, Kazumasa Tokushima University
Okabe, Serika Tokushima University
Keywords
ion chromatography
anion
suppressor
Nafion tube
axial dispersion
Content Type
Journal Article
Description
The suppressor used in ion chromatography is a module placed between the separation column and conductivity detector. The axial dispersion of the sample solution in the suppressor causes a decline of detection sensitivity due to the broadening of the detection peaks. In this paper, we describe a monofilament inserted Nafion tube-type suppressor for anion analysis, which has an axial dispersion-reduced structure. A standard solution containing fluoride, formate, chloride, nitrite, nitrate, and sulfate was measured by means of an ion chromatograph with the fabricated suppressor. The number of theoretical plates and resolution were, respectively, 1.6 to 2.9 times and 1.3 to 1.8 times higher for the fabricated suppressor than a commercially available electrolytic suppressor. These results suggest that the fabricated suppressor has less axial dispersion of the sample than the electrolytic suppressor. In addition, the background level of the conductivity signal with the fabricated suppressor was suppressed to almost the same level as the electrolytic suppressor.
Journal Title
Journal of Flow Injection Analysis
ISSN
0911775X
24337374
NCID
AA10962565
Publisher
Japanese Association for Flow Injection Analysis
Volume
37
Issue
1
Start Page
3
End Page
8
Published Date
2020
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
jpn
TextVersion
Publisher
departments
Pharmaceutical Sciences