Determination of 1-methyl-2-pyrrolidone in refinery hydrocarbons and waters by gas chromatography
A new procedure has been developed for the trace and percent level determination of 1-methyl-2-pyrrolidone (NMP) in water and heavy oil refinery feedstocks. By extraction of the NMP into an aqueous phase, analysis can be quickly performed on a gas chromatograph equipped with a flame ionization detector and a nitrogen-phosphorus detector. Recycle and cleanup time is held to a minimum as heavy hydrocarbons are never directly analyzed. Quick analysis and accurate results provide the data necessary for optimal operation of the NMP extraction unit in the refinery. Percent and parts-per-million results are repeatable to 0.1% and 2.0 ppm. The large repeatability for part-per-million determinations is due to NPD instability and contamination of the gas chromatograph's injector.
- Research Organization:
- Amoco Oil Co., Whiting, IN
- OSTI ID:
- 5870408
- Journal Information:
- Anal. Chem.; (United States), Vol. 56:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
HYDROCARBONS
QUANTITATIVE CHEMICAL ANALYSIS
PYRROLIDONES
GAS CHROMATOGRAPHY
SOLVENT EXTRACTION
WATER
EXPERIMENTAL DATA
PETROLEUM REFINERIES
VISCOSITY
AMIDES
AZOLES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
EXTRACTION
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
LACTAMS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PYRROLES
SEPARATION PROCESSES
400102* - Chemical & Spectral Procedures
020900 - Petroleum- Environmental Aspects