Spectral signatures of fluorescence and light absorption to identify crude oils found in the marine environment
Spectral signatures of fluorescence and light absorption to identify crude oils found in the marine environment
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DOI：
10.2971/jeos.2014.14029
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发表时间：
2014-01-01
影响因子：
1.5
通讯作者：
Otremba, Z.
中科院分区：
文献类型：
--
作者：
Baszanowska, E.;Otremba, Z.
为了保护自然海洋生态系统，有必要不断提高对环境污染的认识，包括石油污染。因此，为了正确地跟踪海水天然成分的定性和定量变化，描述石油产品的基本光谱特征是必要的。本研究研究了两种光学上不同类型的原油（Petrobaltic和Romashkino）——属于多含氟体系的物质。为了获得原油的光谱特征，采用了激发发射光谱技术。描述了在稳定温度下不同浓度油的荧光和光吸收特性。讨论了原油的激发发射光谱（EEMs）和吸收光谱。基于EEM光谱，确定了每种油的波长无关荧光最大值(Ex（max)/Em(max)）特征点的激发端发射峰，并与典型海洋化学结构的文献数据进行了比较。
To protect the natural marine ecosystem, it is necessary to continuously enhance knowledge of environmental contamination, including oil pollution. Therefore, to properly track the qualitative and quantitative changes in the natural components of seawater, a description of the essential spectral features describing petroleum products is necessary.This study characterises two optically-different types of crude oils (Petrobaltic and Romashkino) - substances belonging to multi-fluorophoric systems. To obtain the spectral features of crude oils, the excitation-emission spectroscopy technique was applied. The fluorescence and light absorption properties for various concentrations of oils at a stabilised temperature are described. Both excitation-emission spectra (EEMs) and absorption spectra of crude oils are discussed. Based on the EEM spectra, both excitation end emission peaks for the wavelength-independent fluorescence maximum (Ex(max)/Em(max)) - characteristic points for each type of oil - were identified and compared with the literature data concerning typical marine chemical structures.