Abstract
A procedure is proposed for the determination of priority polycyclic aromatic hydrocarbons (PAH) in water by gas chromatography–tandem mass spectrometry. The procedure differs from the known ones by the low level of the limit of determination, 0.1–1.0 ng/L and intra laboratory precision of 15–20%. A simple and rapid sample preparation procedure—a single extraction of PAH with n-hexane (sample volume 0.1 L, concentration factor 102–103)—can be easily implemented in routine analyses in monitoring research. The direct analysis of extracts eliminates the risk of losses of easily volatile PAH. Among the additional advantages of the procedure are small volumes of the extractant (1 mL) and the organic solvent, respectively, for its subsequent utilization. The procedure was tested in monitoring PAH in waters of Lake Baikal and its side streams and in the analysis of atmospheric precipitates on urban and background areas.
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ACKNOWLEDGMENTS
We are grateful to S.M. Shishlyannikov and I.S. Mikhailov for their help in taking water samples in Lake Baikal and its side streams, and to M. Yu. Suslova for taking water samples in the surface microlayer.
Funding
This work was performed within the State Task of the Ministry of Science and Higher Education of the Russian Federation (project no. 0345-2016-0008, state registration number AAAA-A16-116122110065-4) using the equipment of the Core Facility Center for Physical and Chemical Ultramicroanalysis of the Limnological Institute of the Siberian Branch of the Russian Academy of Science.
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Translated by E. Rykova
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Gorshkov, A.G., Izosimova, O.N. & Kustova, O.V. Determination of Priority Polycyclic Aromatic Hydrocarbons in Water at The Trace Level. J Anal Chem 74, 771–777 (2019). https://doi.org/10.1134/S1061934819080082
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DOI: https://doi.org/10.1134/S1061934819080082