Choengchan, Nathawut

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Choengchan, Nathawut
Alternative Name
Choengchan, N.
Choengchan, Nuthawut
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nathawut.ch@kmitl.ac.th

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    Item type:Publication,
    Transparent Cross-Flow Platform as Chemiluminescence Detection Cell in Cross Injection Analysis
    (2023-02-01)
    Somboonsuk, Thachkorn
    ;
    Saetear, Phoonthawee
    ;
    Mantim, Thitirat
    ;
    Ratanawimarnwong, Nuanlaor
    ;
    Wilairat, Prapin
    This work presents the use of a transparent ‘Cross Injection Analysis’ (CIA) platform as a flow system for chemiluminescence (CL) measurements. The CL-CIA flow device incorporates introduction channels for samples and reagents, and the reaction and detection channels are in one acrylic unit. A photomultiplier tube placed above the reaction channel detects the emitted luminescence. The system was applied to the analysis of (i) Co(II) via the Co(II)-catalyzed H<inf>2</inf>O<inf>2</inf>-luminol reaction and (ii) paracetamol via its inhibitory effect on the catalytic activity of Fe(CN)<inf>6</inf><sup>3−</sup> on the H<inf>2</inf>O<inf>2</inf>-luminol reaction. A linear calibration was obtained for Co(II) in the range of 0.002 to 0.025 mg L<sup>−1</sup> Co(II) (r<sup>2</sup> = 0.9977) for the determination of Co(II) in water samples. The linear calibration obtained for the paracetamol was 10 to 200 mg L<sup>−1</sup> (r<sup>2</sup> = 0.9906) for the determination of pharmaceutical products. The sample throughput was 60 samples h<sup>−1</sup>. The precision was ≤4.2% RSD. The consumption of the samples and reagents was ca. 170 µL per analysis cycle.