Determination of total and combined chlorine in water with the pyridine-pyrazolone reagent

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Description

Abstract An improved method for the determination of residual chlorine in water is described. The principle of this method is based on the conversion of total chlorine to cyanogen chloride with potassium cyanide, followed by color development with pyridine-pyrazolone reagent. For the determination of combined chlorine, sodium arsenite was used to eliminate free chlorine. The calibration curves for free and combined chlorine were identical.

Journal

  • Chemosphere

    Chemosphere 15 707-715, 1986-01-01

    Elsevier BV

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