Chemistry: analytical and immunological testing – Nuclear magnetic resonance – electron spin resonance or other...
Patent
1993-06-10
1995-03-28
Housel, James C.
Chemistry: analytical and immunological testing
Nuclear magnetic resonance, electron spin resonance or other...
436 8, 436 19, 436 56, 436103, 436104, 436161, 436174, 436177, G01N 3072, G01N 100, G01N 3700
Patent
active
054016649
ABSTRACT:
A safe analytical technique for determining the concentration amount of dibutyl and monobutyl phosphate degradation products in the TBP-dodecane solvent used in solvent extraction processes. This method of chemical analysis eliminates the use of diazomethane, which is toxic and explosive, thereby providing a safer laboratory technique for routine analyses required to monitor production solvent extraction processes. The solvent sample to be analyzed is spiked with mass labelled, deuterated dibutyl and monobutyl phosphates, which act as internal standards. After adding a silylating agent, bistrimethylsilyltrifluoracetamide, the sample is injected into a gas chromatograph/mass spectrometer, which measures the ratio between the labelled internal standard and the naturally occurring material to obtain a quantitative result.
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Fox Richard L.
Grade Hans
Larson Richard I.
Ligon Woodfin V.
General Electric Company
Housel James C.
McGinness J. E.
Soderquist Arlen
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