Abstract

This paper presents spectra of light absorption coefficient of oil-in-water emulsion, derived using the Mie theory. In order to achieve that concentration of oil, degree of oil dispersion in seawater as well as spectra of light absorption coefficient and refractive index of chosen oils must be known. A significant role of the size distribution of oil droplets has been revealed: light absorption coefficient of emulsion increases with the rate of dispersion.

© 2007 Optical Society of America

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References

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  1. Z. Otremba, "Modelling the bidirectional reflectance distribution functions (BRDF) of sea areas polluted by oil," Oceanologia 46, 505-518 (2004). http://www.iopan.gda.pl/oceanologia/46_4.html#A3
  2. B. Wozniak and J. Dera, Light Absorption in Sea Water, (Springer, 2007).
  3. C.F. Bohren, D. Huffman, "Absorption and scattering of light by small particles" (John Wiley, New York, 1983).
  4. Z. Otremba, " The impact on the reflectance in VIS of a type of crude oil film floating on the water surface," Opt. Express 7, 129-134 (2000). http://www.opticsinfobase.org/abstract.cfm?URI=oe-7-3-129
    [CrossRef] [PubMed]
  5. T. Król, Z. Otremba, B. Pawlak, "Influence of the size distribution of crude oil emulsion droplets in water on its optical properties," in Proceedings of Conference on. Physicochemical problems of natural waters ecology, pp. 37-52 (2000).
  6. Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
    [CrossRef] [PubMed]
  7. E. P. Zege, I. L. Katsev, A. S. Prikhach, G. Gilbert, N. Whitherspoon, "Simple model of the optical characteristics of bubbles and sediments in seawater of surf zone," Appl. Opt. 45, No 25, 6577-6585 (2006).
    [CrossRef] [PubMed]

2007

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

2006

2004

Z. Otremba, "Modelling the bidirectional reflectance distribution functions (BRDF) of sea areas polluted by oil," Oceanologia 46, 505-518 (2004). http://www.iopan.gda.pl/oceanologia/46_4.html#A3

2000

Boufadel, M. C.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Gilbert, G.

Katsev, I. L.

Kepkay, P.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

King, T.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Lee, K.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Li, Z.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Otremba, Z.

Prikhach, A. S.

Venosa, A. D.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Whitherspoon, N.

Zege, E. P.

Appl. Opt.

Mar. Pollut. Bull.

Z. Li, P. Kepkay, K. Lee, T. King, M. C. Boufadel, A. D. Venosa., "Effects of chemical dispersants and mineral fines on crude oil dispersion in wave tank under breaking waves," Mar. Pollut. Bull. (2007), in press (doi:10.1016/j.marpolbul.2007.02.012).
[CrossRef] [PubMed]

Oceanologia

Z. Otremba, "Modelling the bidirectional reflectance distribution functions (BRDF) of sea areas polluted by oil," Oceanologia 46, 505-518 (2004). http://www.iopan.gda.pl/oceanologia/46_4.html#A3

Opt. Express

Other

T. Król, Z. Otremba, B. Pawlak, "Influence of the size distribution of crude oil emulsion droplets in water on its optical properties," in Proceedings of Conference on. Physicochemical problems of natural waters ecology, pp. 37-52 (2000).

B. Wozniak and J. Dera, Light Absorption in Sea Water, (Springer, 2007).

C.F. Bohren, D. Huffman, "Absorption and scattering of light by small particles" (John Wiley, New York, 1983).

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Figures (4)

Fig. 1.
Fig. 1.

Oil-in-water emulsion (microscopic view): fresh (on the left), 1 week aged (on the right)

Fig. 2.
Fig. 2.

Normalized size distributions of oil droplets in the oil-in-seawater emulsion. Curves reflect the expression (1) containing parameters ro and σ which in Tab. 1 are listed. Thick gray lines represent range of oil droplets radiuses measurable by microscopic method (to extract the data for size distribution parameterization).

Fig. 3.
Fig. 3.

Absorption coefficient of oil-in-water emulsion (1 ppm) as a function of two variables: wavelength and time. Flow of time is a factor changing parameters of size distribution of oil droplets as in Tab. 2.

Fig. 4.
Fig. 4.

Spectra of light absorption coefficient of two types of oil dispersed in seawater (gray areas) and hypothetically dissolved in seawater (broken and dotted lines).

Tables (3)

Tables Icon

Table 1. Parameters of size distribution of oil-in-water emulsion after various time-periods of ageing.

Tables Icon

Table 2. Optical parameters of two types of oil: Petrobaltic and Romashkino

Tables Icon

Table 3. Values of absorption coefficient of oil-in-water emulsions in seawater for volume concentration equal to 1 ppm. Parameters of size distribution (ro and σ from expression 1), are listed in Tab. 1.

Equations (1)

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f ( r ) = A exp [ ln 2 r r o 2 σ 2 ]

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