Comparative analysis of fluorescent methods selectivity for ecotoxicants environmental monitoring

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Abstract

A comparative analysis of classical and synchronous fluorescent methods selectivity for ecotoxicants determination of polycyclic aromatic hydrocarbons (PAHs) was carried out. PAHs sorption preconcentration from aqueous cetyltrimethylammonium bromide micellar solutions and spectra recording on a viscose matrix were used. In the case of complex environmental samples, the scope of fluorimetric analysis can be expanded by registering synchronous fluorescence spectra obtained by simultaneously scanning the excitation and emission wavelengths with a constant shift: λem - λex = Δλ = const. The composition of PAHs mixture (phenanthrene, anthracene, fluorene, pyrene) was experimentally evaluated by classical fluorescence with selective excitation and synchronous fluorescence. It was concluded that the use of synchronous spectra makes it possible to improve the selectivity of the PAHs fluorescence analysis in a mixture. These methods can be successfully applied to identify individual PAHs in monitoring of environment water bodies.

About the authors

Olga A. Plotnikova

Yuri Gagarin Saratov State Technical University

Author for correspondence.
Email: plotnikovaoa@sstu.ru
ORCID iD: 0000-0003-2715-044X

Cand. Sc. in Chemistry, Associate Professor of the Department of Ecology and Technosphere Safety

77 Politechnicheskaya St, Saratov, 410054, Russian Federation

Elena I. Tikhomirova

Yuri Gagarin Saratov State Technical University

Email: tichomirovaei@sstu.ru
ORCID iD: 0000-0001-6030-7344

D. in Biology, Professor, Head of the Department of Ecology and Technosphere Safety

77 Politechnicheskaya St, Saratov, 410054, Russian Federation

Gennadyi V. Melnikov

Yuri Gagarin Saratov State Technical University

Email: melnikov_gv@sstu.ru
ORCID iD: 0000-0002-4708-2256

D. in Chemistry, Professor of the Department of Physics

77 Politechnicheskaya St, Saratov, 410054, Russian Federation

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Copyright (c) 2022 Plotnikova O.A., Tikhomirova E.I., Melnikov G.V.

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