2.2 Fluorescence of Oil Dispersed in Water 
The samples of oil in water were prepared by mixing 
few milligrams of mineral oil with 1 liter of distilled 
water. Part of the oil produced an oil film on water 
GASOLINE IN WATER 
Excitation R$ 
wavelength, nm = f 
  
300 400 À, nm 
KEROSENE IN WATER 
266 / Y : 370 
| 
  
  
  
À , nm 
  
surface, so the concentration of oil dispersed in Water 
was lower than the total oil content during the mixing 
process. In our spectroscopic study we do not 
distinguish emulsified and truly dissolved oil Species, 
because we tried to bring a process of sample 
preparation to natural conditions. 
DIESEL FUEL IN WATER 
  
300 400 A, nm 
LIBYAN CRUDE OIL IN WATER 
  
  
300 400 A ,nm 
Fig. 2. Fluorescence emission spectra of oil dispersed in water excited at different wavelengths. 
RS - water Raman scattering 
570 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996 
  
un "e ED €). D (OD D .—'" €«)