Liquid chromatographic determination of water

Patent · Tue Nov 13 00:00:00 EST 1990

OSTI ID:7267695

Fortier, N E; Fritz, J S

A sensitive method for the determination of water in the presence of common interferences is presented. The detection system is based on the effect of water on the equilibrium which results from the reaction aryl aldehydes, such as cinnamaldehyde and methanol in the eluent to form cinnamaldehyde dimethylacetal, plus water. This equilibrium is shifted in a catalytic atmosphere of a hydrogen ion form past column reactor. The extent of the shift and the resulting change in absorbance are proportional to the amount of water present. 1 fig.

• DOE Contract Number: W-7405-ENG-82
• Assignee: Iowa State Univ. Research Foundation, Inc., Ames, IA (United States)
• Patent Number(s): US 4970170; A
• Application Number: PPN: US 7-220743
• OSTI ID: 7267695
• Resource Relation: Patent File Date: 18 Jul 1988
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALDEHYDES
CHEMICAL REACTIONS
METHANOL
WATER
QUANTITATIVE CHEMICAL ANALYSIS
LIQUID COLUMN CHROMATOGRAPHY
ALCOHOLS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
400102* - Chemical & Spectral Procedures