Publication result detail
The spectrometric characterization of lipids extracted from lignite samples from various coal basins
DOSKOČIL, L.; ENEV, V.; PEKAŘ, M.; WASSERBAUER, J.
Original Title
The spectrometric characterization of lipids extracted from lignite samples from various coal basins
English Title
The spectrometric characterization of lipids extracted from lignite samples from various coal basins
Type
WoS Article
Original Abstract
Lipids were extracted from seven different lignite samples and subsequently characterized using spectrometric methods. Excitation-emission matrix (EEM) or total luminescence spectrometry was here used for the first time to study lipids extracted from lignites more extensively. Spectrometric characterization showed that lipids differ from each other depending on the origin of the lignite in which they occur. EEM spectra can be used as fingerprints not only for distinguishing between lipids but also lignites. Lipids contain fluorophores, which participate in the total fluorescence of lignites; some of these also participate in the fluorescence of humic substances. The typical maxima (260-275/370-440 nm) of EEM lipid spectra lie within the A' region, which can be ascribed to aromatic ring systems and steroids. Lipids from South Moravian lignite also contain maxima in the H (255/305 nm) and V (430/475 nm) regions, in contrast to other samples. The first could be related to single aromatic systems and substituents such as carboxyl and carbonyl and the latter is probably the result of intramolecular charge-transfer states.
English abstract
Lipids were extracted from seven different lignite samples and subsequently characterized using spectrometric methods. Excitation-emission matrix (EEM) or total luminescence spectrometry was here used for the first time to study lipids extracted from lignites more extensively. Spectrometric characterization showed that lipids differ from each other depending on the origin of the lignite in which they occur. EEM spectra can be used as fingerprints not only for distinguishing between lipids but also lignites. Lipids contain fluorophores, which participate in the total fluorescence of lignites; some of these also participate in the fluorescence of humic substances. The typical maxima (260-275/370-440 nm) of EEM lipid spectra lie within the A' region, which can be ascribed to aromatic ring systems and steroids. Lipids from South Moravian lignite also contain maxima in the H (255/305 nm) and V (430/475 nm) regions, in contrast to other samples. The first could be related to single aromatic systems and substituents such as carboxyl and carbonyl and the latter is probably the result of intramolecular charge-transfer states.
Keywords
Excitation-emission matrix; Fluorophore; Humic substances; Lignite; Lipid
Key words in English
Excitation-emission matrix; Fluorophore; Humic substances; Lignite; Lipid
Authors
DOSKOČIL, L.; ENEV, V.; PEKAŘ, M.; WASSERBAUER, J.
RIV year
2017
Released
01.05.2016
ISBN
0146-6380
Periodical
ORGANIC GEOCHEMISTRY
Volume
95
Number
5
State
United Kingdom of Great Britain and Northern Ireland
Pages from
34
Pages to
40
Pages count
7
BibTex
@article{BUT122941,
author="Leoš {Doskočil} and Vojtěch {Enev} and Miloslav {Pekař} and Jaromír {Wasserbauer}",
title="The spectrometric characterization of lipids extracted from lignite samples from various coal basins",
journal="ORGANIC GEOCHEMISTRY",
year="2016",
volume="95",
number="5",
pages="34--40",
doi="10.1016/j.orggeochem.2016.02.008",
issn="0146-6380"
}