Application of thin-layer chromatography for analysis of heavy petroleum products

1984 ◽  
Vol 20 (9) ◽  
pp. 462-464
Author(s):  
A. M. Botvin'eva
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Petroleum Products ◽  
Heavy Petroleum ◽  
Layer Chromatography

scholarly journals Determination of Hydrocarbon Types in Petroleum and Coal-Derived Products by Thin-Layer Chromatography/Densitometry

2000 ◽  
Vol 83 (6) ◽  
pp. 1474-1479 ◽  
Author(s):  
Vicente L Cebolla ◽  
Luis Membrado ◽  
Jesús Vela ◽  
Rosa Garriga ◽  
Patrick Henrion ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Silica Gel ◽  
Polar Compounds ◽  
Petroleum Products ◽  
Excitation Wavelength ◽  
Standard Calibration ◽  
Alternative Detection ◽  
Middle Distillates ◽  
Layer Chromatography

Abstract Different methodologies based on thin-layer chromatography (TLC)/densitometry were used to separate and quantitate hydrocarbon types in middle distillates (gas oil), heavy distillates (lubricant) from petroleum, and coal-derived products. Thus, petroleum products were separated into saturates and aromatics by development, using n-hexane (9 min) followed by dichloromethane (4.5 min), of silica gel plates impregnated with berberine sulfate. Detection of saturates and aromatics was performed by fluorescence scanning using 365 nm as the excitation wavelength. Alternative detection of aromatics can be performed on either silica gel or berberine-impregnated plates by using ultraviolet (UV) densitometry at 250 nm. On the other hand, polar coal-derived products were separated into aromatics, polar compounds, and uneluted components by using silica gel plates and development with toluene (12 min), followed by dichloromethane–methanol (95 + 5, v/v), with detection by UV densitometry at 250 nm. In all cases, external standard calibration was used for quantitation. Results were validated by using standard methods or well-established techniques of the petrochemical industry. The potential usefulness of TLC/densitometry is discussed.

scholarly journals THE ROLE OF THIN LAYER CHROMATOGRAPHY AT CRIMINALISTIC INVESTIGATION OF OIL PRODUCTS BASED INFLAMMATORY MIXTURES

2019 ◽  
Vol 19 (1) ◽  
pp. 256-270
Author(s):  
V. Rudniev ◽  
O. Bui ◽  
A. Klimchuk
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Solvent System ◽  
Petroleum Products ◽  
Oil Products ◽  
Primary Study ◽  
Chromatography Method ◽  
Forensic Practice ◽  
Material Evidence ◽  
Layer Chromatography

The appearance and quality of the material evidence that comes to the study, often also not conducive to the use of complex methods of analysis. There are no separate techniques for forensic investigation of incendiary mixtures, and existing approaches to the study of petroleum products and fuels and lubricants do not allow the tasks set before the experts to be fully addressed. To determine the applicability of the thin layer chromatography method and to interpret its results for the examination of incendiary mixtures, forensic modeling of incendiary incendiary incendiary mixtures was conducted. The study revealed the possibilities and limitations of thin layer chromatography in the analysis of complex compositions, including those containing polymeric thickeners. The results were interpreted for use in forensic practice. The study was performed by TLC in an octane solvent system: benzene with the detection of colored zones in UV rays, with the manifestation of iodine vapors and the processing of chromatograms of 2% formaldehyde in sulfuric acid. The results of thin-layer chromatography characterize the main constituent components and can be used in the primary study of petroleum- based ignition mixtures in expert practice. The use of UV detection of colored zones on a chromatographic plate allows to assess in more detail the nature and composition of the mixture under study, including to identify distillate and residual oil products. Thin-layer chromatography can be recommended as a mandatory method of investigation for the ignition mixtures, which precedes the use of more complex Physics and Chemistry spectral and chromatographic approaches.

Identifying Type of Refined Petroleum Products in Environmental Media: Thin-Layer Chromatography (TLC) as a Quick Methodology

2014 ◽  
Vol 225 (10) ◽  
Author(s):  
Myoung-Soo Ko ◽  
Dongwook Kwon ◽  
Jung-Seok Yang ◽  
Man Jae Kwon ◽  
Seung-Woo Lee ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Petroleum Products ◽  
Environmental Media ◽  
Layer Chromatography

Thin-Layer Chromatography

1965 ◽  
Author(s):  
H. R. Bolliger ◽  
M. Brenner ◽  
H. Gänshirt ◽  
Helmut K. Mangold ◽  
H. Seiler ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Layer Chromatography

THE LESS-POLAR METABOLITES PRODUCED BY INCUBATION OF TESTOSTERONE-4-14C WITH RAT AND BOVINE BRAIN

1969 ◽  
Vol 61 (4) ◽  
pp. 641-648 ◽  
Author(s):  
Leon J. Sholiton ◽  
Emile E. Werk
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Paper Chromatography ◽  
Specific Activity ◽  
Bovine Brain ◽  
Polar Fraction ◽  
End Products ◽  
Polar Metabolites ◽  
Layer Chromatography ◽  
Constant Specific Activity

ABSTRACT Rat and bovine brain have been incubated with testosterone-4-14C under standard conditions. With use of paper chromatography, the extracted metabolites were noted to fall into less-polar, iso-polar, and more polar fractions. The components of the less-polar fraction were separated by acetylation and thin-layer chromatography and the major end-products identified by recrystallization to constant specific activity or constant 3H/14C ratios. Androst-4-enedione and 5α-dihydrotestosterone were formed consistently under the conditions utilized. Trace amounts of other less-polar metabolites were noted occasionally.

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