4. 



3_ 



2- 



z 

 o 



t- 1 _ 



< 



K 



FLASK 

 O TIME 

 SITE 6 



Ul 



o 



z 



o 1_ 

 o 



2 WEEKS 



£1 



on 



12 1 

 □ 



FLASK 

 SITE 6 



JJ 



Mi-m-L 



1_ 



4 WEEKS 



i I I n-i-n-r-i 



idl 



jD 



Ha 



5.1 



n 



4ppml 



_d 



i. 



j 



6 WEEKS 



x£H 



11 12 13 14 15 16 17 PR 18 Ph 19 20 21 22 23 24 25 26 27 28 



N C,C, CjP C,C, C,D C, C,C, F C, 

 NNN PPPBDDD F 



T B B B 



TIT 



FIGURE 8. (Left column) Changes in the relative concentrations of aliphatic 

 hydrocarbons in flask experiment with sediment from site 6. 



FIGURE 9. (Right column) Changes in the relative concentrations of aromatic 

 hydrocarbons in flask experiment with sediment from site 6. 



23 



