Experimental studies of efficient sensing fluorescence radiation bands to detect oil and petroleum product spills

Abstract

We have experimentally studied the laser-induced spectra of petroleum products at the excitation fluorescence wavelength of 266 nm. The paper depicts a schematic diagram of the laboratory setup, gives data resulted from processing of laser-induced fluorescence spectra, and shows that, in comparison with spectra of petroleum products, the laser-induced fluorescence spectra of oil have a shift toward the longer wavelength spectral region and a far wider spectral bandwidth. For oil, an efficient band of sensing fluorescence radiation, is of ~ 390 – 600 nm in average. For gasoline, an efficient band of sensing fluorescence radiation has a significant shift toward the shorter wavelength region (~ 320 – 360 nm) as compared to the efficient sensing fluorescence radiation band for diesel and engine oils (~ 330-395 nm).

Species Identification and Effects of Aromatic Hydrocarbons on the Fluorescence Spectra of Different Oil Samples in Seawater

“…e combination of complex composition and multiplicity along with energy transfer and intermolecular interactions can also lead to a very complex pattern of energy levels [47]. In addition, the energy transfer between fluorene and other fluorescing AHs can be explained by the occurrence of an external heavy atom effect in oil samples containing high amounts of heavy petroleum hydrocarbons [16,48], indicating that AHs affect the fluorescence spectra of oils by quenching signals and generating other peaks. ese literature reports further supported our findings that oil samples in seawater can be distinguished based on the fluorescence spectral difference and the contribution of individual AHs.…”

“…Furthermore, AHs are the major fluorescent components in petroleum and predominate in the fluorescence spectra of sea surface oil slicks [12][13][14]. us, petroleum products containing different AH groups exhibit different fluorescence characteristics, which have been recently used to successfully detect and identify oil species in seawater [15,16]. In addition, the development of reliable and relatively inexpensive instruments by fluorescence spectroscopy has enabled real-time detection of petroleum hydrocarbons, identification of oil species, and measurement of oil thickness in oil slicks [17][18][19].…”

The choice of spectral ranges of registration for the fluorescent method for detecting leaks in oil pipelines at an excitation wavelength of 355 nm

“…The task of laser monitoring of oil pollution on the earth's surface is difficult due to a large number of interfering factors -the influence of fluorescence of elements of the earth's landscape, and primarily vegetation [11][12][13][14][15][16] and water bodies [17][18][19]. This task is further complicated by the fact that for different grades of oil, the maxima of the laser-induced fluorescence spectra are in different spectral ranges [10,[19][20][21][22][23][24][25][26].…”