Method and apparatus for detecting hexavalent chromium

Details Method and apparatus for detecting hexavalent chromium Method and apparatus for detecting hexavalent chromium

1974-04-23

1976-03-02

Serwin, R. E.

Chemistry: physical processes

Physical processes

Crystallization

23253R, 356 36, G01N 3318, G01N 2126

Patent

active

039415635

ABSTRACT:
Disclosed herein is a process and apparatus for quantitatively determining the amount of hexavalent chromium (CR.sup..sup.+6) in a process stream by comparing the optical density of the process stream with a reference sample produced by reducing Cr.sup..sup.+6 to Cr.sup..sup.+3 by contacting it with a sulfur dioxide reducing agent.

REFERENCES:
patent: 3341299 (1967-09-01), Catravas
patent: 3415627 (1968-12-01), Rait
patent: 3572994 (1971-03-01), Hochstrasser
patent: 3704953 (1972-12-01), Carter et al.
patent: 3713776 (1973-01-01), Capuano

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