Highly sensitive chemiluminescence flow sensor for ascorbic acid |
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| Authors: | W. Qin Z. J. Zhang H. H. Chen |
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| Affiliation: | Department of Chemistry, Shaanxi Normal University, Xi’an 710062, China, CN
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| Abstract: | A highly sensitive chemiluminescence(CL) flow sensor is proposed for the determination of ascorbic acid. The analytical reagents luminol and iron(II) are immobilized on anion-exchange and cation-exchange resins, respectively, and can be eluted by sodium sulphate. The calibration graphs are linear in the range 1 × 10–9 to 1 × 10–6 g mL–1 and the detection limit is 4.0 × 10–10 g mL–1. The sensor has been applied successfully to the determination of ascorbic acid in vegetables. |
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