Gas dosimeter for colorimetrically indicating the presence of am

Details Gas dosimeter for colorimetrically indicating the presence of am Gas dosimeter for colorimetrically indicating the presence of am

1987-03-03

1989-06-20

Richman, Barry S.

Chemistry: analytical and immunological testing

Nitrogen containing

Amine and quaternary ammonium

422 57, 422 87, 436112, G01N 278

Patent

active

048409197

ABSTRACT:
A gas dosimeter utilizing a colorimetric reagent for the selective determination of total amines in solution or in air is described. The reagent comprises 1,2 napthoquinone-4-sulfonic acid or a derivative thereof. Upon addition of amines, a color is formed which is quantitatively related to the number of amine molecules reacted. The reagent can be utilized to detect aromatic amines apart from primary amines by the addition of a buffering agent to maintain the pH less than 4.5.

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