Campus Units

Chemistry, Ames Laboratory

Document Type


Publication Version

Accepted Manuscript

Publication Date


Journal or Book Title

Journal of Chromatography A




For the first time, gas chromatographic (GC) stationary phases consisting of zwitterionic liquids (ZILs) possessing sulfonate functional groups were utilized for the analysis of volatile carboxylic acids (VCAs). The highly polar and acidic nature of VCAs significantly limits the number of currently available GC stationary phases, which are all largely based on acid-modified polyethylene glycol. In this study, it is shown that this class of ZILs exhibit strong retention of VCAs with excellent peak symmetry. Unique chromatographic selectivity toward VCAs is also demonstrated by tuning the structural features of the ZILs. The solvation properties of the three ZILs as well as a structurally similar conventional monocationic IL were characterized using the Abraham solvation parameter model.


This is a manuscript of an article published as Nan, He, Kosuke Kuroda, Kenji Takahashi, and Jared L. Anderson. "Examining the unique retention behavior of volatile carboxylic acids in gas chromatography using zwitterionic liquid stationary phases." Journal of Chromatography A (2019). DOI: 10.1016/j.chroma.2019.06.021. Posted with permission.

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Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier B.V.



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Available for download on Thursday, June 10, 2021

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Chemistry Commons