FIGURE 19. Sampling stations. 



TABLE 3. Characteristics of the samples. 



Moreover, on these fractions a simulated distillation curve was 

 plotted (TBP or True Boiling Point) by gas phase chromatography accor- 

 ding to the method of Petroff et al . (1981). 



Results of the distillation (Table 4) and the TBP on the PI-340°C 

 (Table 5) indicate a loss by evaporation and dissolution of about 7- 

 8 % of the light- hydrocarbons between March 22, 1978 and April 4, 1978. 



131 



