| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 10, 2015
|
|
|---|---|---|
| Article Number | 15047 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.2971/jeos.2015.15047 | |
| Published online | 28 October 2015 | |
Regular paper
Modification of optical properties of seawater exposed to oil contaminants based on excitation-emission spectra
Gdynia Maritime University, Physics Department, Gdynia, 81225, Poland
Received:
9
August
2015
Revised:
21
September
2015
The optical behaviour of seawater exposed to a residual amount of oil pollution is presented and a comparison of the fluorescence spectra of oil dissolved in both n-hexane and seawater is discussed based on excitation-emission spectra.
Crude oil extracted from the southern part of the Baltic Sea was used to characterise petroleum properties after contact with seawater. The wavelength-independent fluorescence maximum for natural seawater and seawater artificially polluted with oil were determined. Moreover, the specific excitation-emission peaks for natural seawater and polluted water were analysed to identify the natural organic matter composition. It was found that fluorescence spectra identification is a promising method to detect even an extremely low concentration of petroleum residues directly in the seawater. In addition, alien substances disturbing the fluorescence signatures of natural organic substances in a marine environment is also discussed.
Key words: Optics of oil / fluorescence spectroscopy / excitation-emission spectra / oil pollution / seawater
© The Author(s) 2015. All rights reserved.
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