G - Physics – 01 – N
Patent
G - Physics
01
N
73/57
G01N 21/17 (2006.01) B01D 53/14 (2006.01) G01N 21/33 (2006.01)
Patent
CA 1176869
ABSTRACT OF THE DISCLOSURE A method and an apparatus for photometrically analyzing the hydrogen sulfide concentration in a stream containing at least a first predetermined concentration of bonded hydrogen sulfide-amines and ultraviolet radiation-absorbing impurities is characterized by isolating a first, reference, sample of the stream and removing the hydrogen sulfide from the reference sample until a second, lower, predetermined concentration remains. Thereafter, the first, reference, sample is photometrically analyzed and a reference signal representative of the ultraviolet radiation-absorbing characteristics of the first, reference, sample is produced. The reference signal is thereafter used in the photometric analysis of a second sample to produce a signal representative only of the hydrogen sulfide concentration in the second sample.
390994
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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