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Two Fibers Packed in Capillary Column for Gas Chromatographic Separation

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Abstract

The bare optical fiber of 0.12 mm o.d. has been introduced as the support material in gas chromatography. Two fused-silica fibers coated with polydimethylsiloxane (SE30) were longitudinally packed into a 2 m SE30 capillary column (SE30-CFs-packed SE30-CC), followed by studying chromatographic performances. With 0.012 g/mL SE30 solution coating onto the packed fibers, the efficiency per unit length of SE30-CFs-packed SE30-CC was 1695 plates/m (for the separation of n-hexadecane at 120°С). The retention power and sample loading capacity of this SE30-CFs-packed SE30-CC were improved over a single SE30-coated fused-silica fiber in a SE30-coated capillary annular column (SE30-CF/SE30-CC) as well as a conventional SE30 capillary column (HP-1). The results showed the contribution of the two coated fused-silica fibers to the retentivity and sample loading capacity of the column. With a large injection, SE30-CFs-packed SE30-CC provided better separation for hidden harmful solvents in beta-cypermethrin malathion than SE30-CF/SE30-CC and HP-1 of the same length.

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Funding

Financial support from National Natural Science foundation of China (20775050), and Sichuan Vocational College of Health and Rehabilitation crossing research project (CWKY-2020H-01) are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Pharmacy, Sichuan Vocational College of Health and Rehabilitation, 643000, Zigong, Sichuan, China

    Wenxi Qiu, Lishi Zhou & Huiyun Zhong

  2. Department of Materials and Chemical Engineering, Chongqing University of Arts and Sciences, 402160, Chongqing, China

    Lixin Ling

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  1. Wenxi Qiu
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  2. Lixin Ling
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  4. Huiyun Zhong
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Correspondence to Wenxi Qiu or Lixin Ling.

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Qiu, W., Ling, L., Zhou, L. et al. Two Fibers Packed in Capillary Column for Gas Chromatographic Separation. J Anal Chem 76, 755–760 (2021). https://doi.org/10.1134/S1061934821060113

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  • DOI: https://doi.org/10.1134/S1061934821060113

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