Total residual chlorine

Details Total residual chlorine Total residual chlorine

1977-02-16

1977-09-20

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23253R, 204 1T, G01N 3318, G01N 2752

Patent

active

040493822

ABSTRACT:
A method of monitoring the total residual chlorine in solution. A sample stream is extracted from the solution and mixed with a reagent stream containing a dissociated complex of alkali metal ion and iodide ion, and an excess amount of iodide ion. Iodide ion reacts with all the residual chlorine in the sample stream and is converted to iodine. The activity of iodine is then measured in the resultant mixed stream with a first and second electrochemical potentiometric electrode, the first electrode having a noble metal oxidation-reduction element, and the second having an iodide sensitive membrane element. The total residual chlorine is determined from the activity of the iodine.

REFERENCES:
patent: 3413199 (1968-11-01), Morrow, Jr.
patent: 3937613 (1976-02-01), Rosicky
Hallinan, "Test for Residual Chlorine," Indus. & Eng. Chem. (Anal. Edit.), vol. 12, 1940, pp. 452-453.

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