Envirotech Corporation

Robert J Joyce

Yoshihiro Takahashi

Robert T Moore

A three phase process for determining total organic halides in water. The first phase is a sorptive process including passing a liquid through a packed bed of sorptive material thereby removing quantitatively, purgeable and non-purgeable, organic halides and thereafter passing an inorganic halide displacement wash solution through the bed to displace inorganic halides. The second and third phases are a combination combustion and titration whereby organic bromides and other organic halides entering the combustion phase are quantitatively titrated coulometrically. The second and third phases include in a first heating zone heating a sample, such as the sorptive material following the first phase, in the presence of a mild oxidant to a temperature sufficient to vaporize water; in a second heating zone heating any remaining sample from the first heating zone and gases therefrom in the presence of an oxidant to a temperature sufficient to complete combustion of the sample and gases; and concurrently titrating coulometrically the gases from the second heating zone.

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Cupertino, CA, United States of America

Robert J Joyce