Flow-injection spectrophotometric determination of residual free chlorine and chloramine
A Chaurasia, KK Verma - Fresenius' journal of analytical chemistry, 1995 - Springer
A Chaurasia, KK Verma
Fresenius' journal of analytical chemistry, 1995•SpringerDinitrophenylhydrazine has been suggested as a new reagent for the flow-injection
spectrophotometric determination of residual chlorine based on its oxidation to 2, 4-
dinitrophenyldiazonium ion. The measurement of the decrease in colour intensity under
reversed flow-injection (reagent injection) conditions has been used for the determination of
0.1–10 mg/l Cl present as free or combined chlorine, and for its speciation. The limit of
detection was 0.05 mg/l Cl. Copper (II), iron (III) and many other ions have been found not to …
spectrophotometric determination of residual chlorine based on its oxidation to 2, 4-
dinitrophenyldiazonium ion. The measurement of the decrease in colour intensity under
reversed flow-injection (reagent injection) conditions has been used for the determination of
0.1–10 mg/l Cl present as free or combined chlorine, and for its speciation. The limit of
detection was 0.05 mg/l Cl. Copper (II), iron (III) and many other ions have been found not to …
Abstract
2,4-Dinitrophenylhydrazine has been suggested as a new reagent for the flow-injection spectrophotometric determination of residual chlorine based on its oxidation to 2,4-dinitrophenyldiazonium ion. The measurement of the decrease in colour intensity under reversed flow-injection (reagent injection) conditions has been used for the determination of 0.1–10 mg/l Cl present as free or combined chlorine, and for its speciation. The limit of detection was 0.05 mg/l Cl. Copper (II), iron (III) and many other ions have been found not to vitiate the results.
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