METHOD OF DETECTING 2-NAPHTHOL IN AQUEOUS SOLUTIONS IN PRESENCE OF PHENOL Russian patent published in 2011 - IPC G01N30/00 G01N31/22 

FIELD: chemistry.

SUBSTANCE: method involves passing the analysed aqueous solution through a column filled with sorbent which is impregnated with a mixture of solvents, subsequent desorption of 2-naphthol from the column and its detection in the strippant using a photometric technique, wherein the sorbent used is foamed polyurethane, and the impregnated mixture of solvents contains n-amyl acetate and tridecane with the following ratio of components in wt %: n-amyl acetate 70-75, tridecane 25-30.

EFFECT: achieving selectivity and faster analysis.

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