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Journal of Liquid Chromatography & Related Technologies Volume 41, 2018 - Issue 17-18
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Articles

Application of microemulsions for the extraction, pre-concentration of PAHs as a tool for fast screening of perspective oil chemical markers

Valentina V. LevkinaLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Andrey V. PirogovLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; Correspondence[email protected]
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Ekaterina S. PetrukLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Mongjoo JangLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Timofey A. BolotnikLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Alexandra Y. MylenkovaDivision of Geology and Geochemistry of Minerals, Department of Geology, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Michail V. PopikDivision of Physical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Bogusław BuszewskiDivision of Environmental Chemistry and Bioanalytics, Department of Chemistry, Nicolaus Copernicus University, Torun, PolandORCID Iconhttp://orcid.org/0000-0002-5482-7500View further author information
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Oleg A. ShpigunLaboratory of Chromatography, Division of Analytical Chemistry, Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia; View further author information
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Pages 1004-1012 | Received 05 Oct 2018, Accepted 29 Nov 2018, Published online: 21 Jan 2019
 
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Abstract

A simple method for the determination of 16 priority polycyclic aromatic hydrocarbons (PAHs) from geological cores as oil markers using microemulsion extraction, pre-concentration with following fluorometric detection was developed. Parameters, such as the composition of microemulsion (ME), temperature, pH, which affect the intensity of fluorescence were investigated and optimized. The potential of the developed technique has been demonstrated by the determination of these PAHs in oil and oil cores. The calculated pre-concentration factor using microemulsion (3.3% CTAB, 0.8% heptane, 8% n-butanol and 87.9% water) varies from 5 to 10. The main parameters that influence the intensity of fluorescence are the charge of a surfactant and the nature of the oil. The limits of detection ranged between 10–50 μg/kg.

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Funding

The research was funded by Russian Science Foundation (RSF) [grant № 16-13-10079].

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