Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1975-11-28
1977-08-30
Church, Craig E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, G01N 2126
Patent
active
040456714
ABSTRACT:
A sensitive arrangement for determining presence of oil, at low parts per million, in water. It employs infrared absorbtion measurement, and first mixes the water with an oil solvent that may be separated from the water after taking any oil into solution. Also, the solvent is one which does not have any significant infrared absorbency at a predetermined wave length, which does have absorbency by hydrocarbons. After separation of the oil solvent, it is continuously passed through an absorption cell in an infrared spectrometer, to monitor the presence of oil in the water.
REFERENCES:
patent: 3627419 (1971-12-01), Thevenier
patent: 3727049 (1973-04-01), Saunders
Dille Roger M.
Gripshover David F.
Shull Don L.
Van Stavern Merle H.
Church Craig E.
Dearborn Henry C.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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