Monitoring method for isothiazolones in aqueous systems

Details Monitoring method for isothiazolones in aqueous systems Monitoring method for isothiazolones in aqueous systems

1985-07-15

1987-03-24

Richman, Barry S.

Chemistry: analytical and immunological testing

Heterocyclic carbon compound

Diverse hetero atoms in same or different rings

436178, 436904, G01N 118, G01N 3102

Patent

active

046525300

ABSTRACT:
A quantitative, sensitive method for monitoring low concentrations of isothiazolones in aqueous systems is provided. The method involves the adsorption of the isothiazolones on a suitable adsorbent, the desorption of the adsorbed isothiazolones, the breaking of the isothiazolone ring and the formation of a blue complex by the reaction of the broken isothiazolone ring with ferric chloride and potassium ferricyanide. The concentration of the isothiazolones is then determined by conventional colorimetric techniques.

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"Rapid Visual Estimation and Spectrophotometric Determination of Tannin Content of Sorghum Grain", J. Agric. Food Chem., 25 (6), pp. 1268-1273.
"Analysis of Total Phenols Using the Prussian Blue Method," J. Agric. Food Chem., 28, pp. 1236-1238.
"Iron Compounds," Encyclopedia of Chemical Technology, 13, (1981), pp. 764-771, 788.

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