Method of detecting the initial concentration of a water-treatme

Details Method of detecting the initial concentration of a water-treatme Method of detecting the initial concentration of a water-treatme

1990-11-07

1992-11-24

Housel, James C.

Chemistry: analytical and immunological testing

Phosphorus containing

436 56, 436104, 436105, 436172, 422 15, 422 16, 422 17, 422 18, 422 19, 210709, 210245, 252180, 2524081, G01N 2164

Patent

active

051660741

ABSTRACT:
A method of detecting the initial concentration of a water-treatment chemical present in a diluted aqueous system, by (1) incorporating into the aqueous system, a mixture including a known amount of the active ingredient and a known amount of an ultra-violet sensitive compound having the formula (I): ##STR1## wherein halogen is chlorine or bromine; X is ##STR2## and a and b, independently are 0 or 1; M is hydrogen or an alkaline metal ion; and (2) detecting the concentration of the compound of formula I, by exposing to ultra-violet light a sample of the aqueous system so treated.

REFERENCES:
patent: 4342739 (1982-08-01), Kakimi et al.
patent: 4783314 (1988-11-01), Hoots et al.

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