The chromatographic analysis of resol solutions in tetrahydrofuran solvent, by means of a set of columns packed with crosslinked polystyrene gels, has been carried out with adequate resolving power for a clear-cut qualitative or semiquantitative difierentiation between various types of resols to be
Non-destructive analysis of crude oil by gel permeation chromatography
β Scribed by Zahida Hameed Khan; Khariya Hussain
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 531 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Glass capillary gas chromatography/mass spectrometry is used to profile Alaskan crude oil for purposes of origin verification. Alaskan oil, sampled at Valdez, Alaska, and transshipped to the U.S. East Coast, is compared with 21 samples of foreign crude oil using GC/MS techniques in whic
## Abstract A procedure is presented for determining the concentration of polymer lithium, alkyllithium, and monomer by use of smallβmolecule GPC. The system poly(styryllithium), butyllithium, styrene, and benzene are used to illustrate the method. The method as presented has a lower limit on the d
The use of a single detector in gel permeation chromatography (GPC) for samples of varying composition leads to erroneous conclusions. With certain simplifying assumptions, a gel permeation chromatograph equipped with properly selected dual detectors yields composition and molecular weight distribut