Measurement and control of water content of organic solvents
An isotopic dilution procedure is described for the quantitative determination of the solubility of water in organic solvents as a function of the relative humidity at which the sample is equilibrated. /sup 3/H/sub 2/O is used as a tracer, and the relative humidity conditions are realized by incubation of the organic solvent above a saturated salt solution having a known water activity. The technique is applicable independent of the concentration range of water present, the minimum amount of moisture being only limited by the concentration of the tritium label used. Solubility isotherms of water in hydrocarbon solvents such as n-hexane are sigmoidal in shape, reflecting cooperative effects in the solubilization of water molecules at the higher relative humidity portion of the curve. Solubility increases with increasing temperature.
- Research Organization:
- Catholic Univ. of Leuven, Heverlee, Belgium
- OSTI ID:
- 5497032
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:7; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400302* -- Organic Chemistry-- Isotope Effects-- (-1987)
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
DATA
EXPERIMENTAL DATA
HUMIDITY
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
ISOTHERMS
ISOTOPE APPLICATIONS
ISOTOPE DILUTION
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
SOLUBILITY
SOLVENTS
TRACER TECHNIQUES
TRITIUM
WATER
YEARS LIVING RADIOISOTOPES