Abstract
Pyrolysis oil from the slow pyrolysis of German brown coal from Schöningen, obtained at a temperature of 500°C, was separated and analyzed using hyphenation of gas chromatography with an atmospheric pressure chemical ionization source operated in negative ion mode and Fourier transform ion cyclotron resonance mass spectrometry (GC-APCI-FT-ICR-MS). Development of this ultrahigh-resolving analysis method is described, that is, optimization of specific GC and APCI parameters and performed data processing. The advantages of GC-APCI-FT-ICR-MS hyphenation, for example, soft ionization, ultrahigh-resolving detection, and most important isomer separation, were demonstrated for the sample liquid. For instance, it was possible to separate and identify nine different propylphenol, ethylmethylphenol, and trimethylphenol isomers. Furthermore, homologous series of different acids, for example, alkyl and alkylene carboxylic acids, were verified, as well as homologous series of alkyl phenols, alkyl dihydroxy benzenes, and alkoxy alkyl phenols.
Highlights
The upcoming depletion of fossil carbon resources, like crude oil and natural gas, forces all oil- and gas-consuming industries to scout for suitable substitutes
Pyrolysis oil from the slow pyrolysis of German brown coal from Schoningen, obtained at a temperature of 500∘C, was separated and analyzed using hyphenation of gas chromatography with an atmospheric pressure chemical ionization source operated in negative ion mode and Fourier transform ion cyclotron resonance mass spectrometry (GC-APCI-FT-ICR-MS)
The hyphenation of gas chromatography (GC) with high-resolution mass spectrometry (MS) represents a method to analyze these complex mixtures in depth [20]
Summary
The upcoming depletion of fossil carbon resources, like crude oil and natural gas, forces all oil- and gas-consuming industries to scout for suitable substitutes. Pyrolysis oil is such resources, produced from organic material [1, 2]. The volatile parts of oil are separated by means of gas chromatography and subsequently identified by mass spectrometry This hyphenation can be applied, for example, to analyze pyrolysis products with different polarities [21,22,23]. Much more efficient oil reprocessing and choice of the pyrolysis oil application site are possible
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