Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2012.02.069 View full text
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Hui-Chao Hu, Hui-Jun Jin, Xin-Sheng Chai

Abstract: A headspace gas chromatographic (HS-GC) method has been developed for the determination of residual hydrogen peroxide in pulp bleaching effluents. The method is based on the reaction of hydrogen peroxide and permanganate in an acidic medium (0.1 mol/L), in which hydrogen peroxide is quantitatively converted to oxygen within 10 min at 60°C in a sealed headspace sample vial. The released oxygen is then determined by GC equipped with a thermal conductivity detector. The method is robust, sensitive, and accurate, …

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