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Sample preparation procedure for the determination of polycyclic aromatic hydrocarbons in petroleum vacuum residue and bitumen
Abstract
This paper describes a novel method of samplepreparation for the determination of trace concentrations ofpolycyclic aromatic hydrocarbons (PAHs) in high-boilingpetroleum products. Limits of quantitation of the investigatedPAHs in materials of this type range from tens ofnanograms per kilogram to <20 μg/kg. The studies revealedthat in order to separate most of interferences from theanalytes without a significant loss of PAHs, it is necessaryto use size exclusion chromatography as the first step ofsample preparation, followed by adsorption using normalphaseliquid chromatography. The use of orthogonalseparation procedure described in the paper allows theisolation of only a group of unsubstituted and substitutedaromatic hydrocarbons with a specific range of molar mass.The lower the required limit of quantitation of PAHs, thelarger is the scale of preparative liquid chromatography inboth steps of sample preparation needed. The use ofinternal standard allows quantitative results to be correctedfor the degree of recovery of PAHs during the samplepreparation step. Final determination can be carried outusing HPLC-FLD, GC-MS, or HPLC-UV-VIS/DAD. Thelast technique provides a degree of identification throughthe acquired UV-VIS spectra.
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- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00216-011-5134-9
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
no. 401,
pages 1059 - 1069,
ISSN: 1618-2642 - Language:
- English
- Publication year:
- 2011
- Bibliographic description:
- Gilgenast-Krasińska E., Boczkaj G., Przyjazny A., Kamiński M.: Sample preparation procedure for the determination of polycyclic aromatic hydrocarbons in petroleum vacuum residue and bitumen// ANALYTICAL AND BIOANALYTICAL CHEMISTRY. -Vol. 401, nr. No. 3 (2011), s.1059-1069
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00216-011-5134-9
- Verified by:
- Gdańsk University of Technology
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