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Poly(ethylene glycol) Methyl Ether Methacrylate-bonded Stationary Phase in Ion Chromatography and Its Application to Seawater Samples

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Abstract

A fast and simple ion chromatographic method for the determination of iodide in seawater is reported using poly(ethylene glycol) methyl ether methacrylate-bonded stationary phase. Poly(ethylene glycol) methyl ether methacrylate was reacted with primary amino groups of aminopropylsilica in N,N-dimethylformamide at 80°C. The prepared stationary phases were evaluated by analyzing several inorganic anions and the retention behavior was observed. Various chromatographic parameters were optimized for the separation of these anions. Although there were no ion-exchange sites on the resulted stationary phases, the results obtained suggested that an ion-exchange mechanism was involved in the retention of analyte anions. With 0.15 μL injection, the limit of quantitation of iodide was 26 μg L−1 when 200 mM NaCl was selected as the eluent. This stationary phase was applied to the analysis of direct and fast determination of iodide in real seawater samples successfully with the recovery rates of 98.1 and 104.9%.

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Acknowledgements

This work was a project sponsored by the Technology Foundation for Selected Overseas Chinese, Sichuan Provincial Human Resources and Social Security Department (No. 4233474). The authors also would like to thank TOSOH Corporation, Tokyo, Japan, for their kindness in supplying of the TSKgel NH2-60 stationary phase.

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Authors and Affiliations

  1. Department of Chemistry, School of Science, **hua University, 999 **zhou-Road, Chengdu, 610039, China

    Li Rong

  2. Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan

    Li Rong, Lee Wah Lim & Toyohide Takeuchi

Authors
  1. Li Rong
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  2. Lee Wah Lim
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  3. Toyohide Takeuchi
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Correspondence to Lee Wah Lim.

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Rong, L., Lim, L.W. & Takeuchi, T. Poly(ethylene glycol) Methyl Ether Methacrylate-bonded Stationary Phase in Ion Chromatography and Its Application to Seawater Samples. ANAL. SCI. 37, 1003–1006 (2021). https://doi.org/10.2116/analsci.20P374

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  • DOI: https://doi.org/10.2116/analsci.20P374

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