Pyrogallol is determined by means of chemiluminescence at 500 nm which accompanies the oxidation by hydrogen peroxide of autoxidized pyrogallol in the presence of chromium(III) and formaldehyde. Using air-segmented continuous flow analysis, the LOD (3s) was 6.0 × 10–9 mol dm–3 and the calibration was linear up to 10–4 mol dm–3. The method has the potential to be extended to other phenols.
N. J. Kearney, E. S. Bridgeland, R. A. Jewsbury, N. D. Martin, S. J. Kelly and S. R. Korn, Anal. Commun., 1996, 33, 241 DOI: 10.1039/AC9963300241
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