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Light scattering in Baltic crude oil - seawater emulsion

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper discusses the scattering of radiation by a Baltic crude oil - seawater emulsion. The scattering spectrum calculated using the Mie solution in the spectral range from 380 nm to 730 nm is compared with the measured spectrum of light scattered through a right angle. Spectra in the wavelength range from 210 nm to 730 nm were measured using a spectrofluorimeter for fresh and stored samples of the Baltic crude oil emulsion. Scattering increases with wavelength in the UV range and then decreases slightly with the wavelength of visible light. The result of the calculation is similar to the measured spectra. Both the calculated and measured spectra display numerous relative extremes throughout the spectral area. Light scattering in the emulsion decreases during storage as the oil concentration in the medium diminishes. The results also demonstrate that the single scattering model describes the phenomenon correctly.
Słowa kluczowe
Czasopismo
Rocznik
Strony
405--414
Opis fizyczny
bibliogr. 10 poz., tab., wykr.
Twórcy
autor
autor
  • Physics Department, Gdynia Maritime University, Morska 81-87, PL-81-225 Gdynia, Poland, stel@am.gdynia.pl
Bibliografia
  • 1.Bohren C. F., Huffman D.R., 1983, Absorption and scattering of light by small particles, Wiley, New York, 530 pp.
  • 2.IAPWS (The International Association for the Properties of Water and Steam), 1997, Release on the refractive index of ordinary water substance as a function of wavelength, temperature and pressure, http://www.iapws.org/relguide/ rindex.pdf.
  • 3.Kaniewski E., Otremba Z., Stelmaszewski A., Toczek H., 2003, Optical properties of the Baltic crude oil, Gd. Maritime Univ. Trans., 49, 174-180, (in Polish).
  • 4.Król T., 1984, A simple computational model of light scattering function for spherical particles, Stud. Mater. Oceanol., 45, 97-119, (in Polish).
  • 5.Król T., 1985, Computational model of Mie coefficients for spherical absorbing scattering particles, Stud. Mater. Oceanol., 49, 43-62, (in Polish).
  • 6.Król T., Stelmaszewski A., Freda W., 2006, Variability in the optical properties of a crude oil -s eawater emulsion, Oceanologia, 48 (S), 203-211.
  • 7.Mikłaszewicz B., 2006, Self-purification of Odra estuary and Pomeranian Bay waters polluted with crude oil derivative emulsions, Ph.D. thesis, Inst. Oceanol. PAS, Sopot, 118 pp., (in Polish).
  • 8.Quan X., Fry E. S., 1995, Empirical equation for the index of refraction of seawater, App. Optics, 34 (18), 3477-3480.
  • 9.Stelmaszewski A., Toczek H., 2007, Preliminary studies of optical properties of oil-water emulsion particles, [in:] Physicochemical problems of natural waters ecology, Vol. 5, Gd. Maritime Univ. Publ., Gdynia, 40-44.
  • 10.Van de Hulst H.C., 1957, Light scattering by small particles, Wiley, New York, 470 pp.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUS5-0020-0042
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