## Abstract Supercritical fluid chromatography using flameless sulfur chemiluminescence detection has been investigated for the analysis of sulfur compounds in petroleum products. The chromatography and detection system was easy to implement and exhibited good precision, linearity, selectivity, and
Thermionic ionization detection of halogenated compounds using supercritical fluid chromatography
β Scribed by Raymond K. Jew; Bruce E. Richter
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 362 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1040-7685
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A thermionic ionization detector utilizing the TIDβ1βN~2~ mode for the analysis of chlorinated compounds was evaluated for use with supercritical fluid chromatography (SFC). A nitrogen atmosphere was employed in the detection zone to give electron capture detector (ECD)βlike responses. Optimum conditions allowed detection of halogenated compounds in the low picogram range with good base line stability during density programming. Selectivity over aliphatics and aromatics ranged between 10^4^ to 10^5^.
π SIMILAR VOLUMES
The principal applications of supercritical fluid chromatography (SFC) are for compounds that are thermally labile, of low volatility, of moderate polarity, or present in mixtures too complex for adequate separation using HPLC. Many compounds of biological and pharmaceutical interest are defined by
## Abstract The modifications made to a flame ionization detector (FID) to facilitate the detection of large molecular weight polar compounds analyzed by capillary supercritical fluid chromatography are described. Some specific examples are given to demonstrate that polar compounds can be effective
A recently developed microelectrochemical detector for packed capil-Ε½ . lary column supercritical fluid chromatography pcSFC has been applied to determine nanogram amounts of tocopherols and vitamin A in vegetable oil samples. With this procedure, no removal of triglycerides, preconcentration, or is
A supercritical fluid extraction procedure and a chromatographic separation/detection method were developed for the detection of Earth-based microorganisms. After microbes in a sand or a soil sample were hydrolyzed in a diluted NH 4 OH/acetone solution, several redox compounds from bacteria could be