12-1 



■a 10- 







o 

 * 



S 6 



o 



2 



-100 



Sta7 



Stal3 



Stal 



Stall 



Sta4 



100 200 300 400 500 

 Benzo(a)pyrene, ppb dw 



— i — 

 600 



700 



l 



800 



12 -| 



=5 io 



u 



T3 g 



v x> 

 1 S 



s° 

 .3 a 



t! 2-1 



8- 

 6- 



4- 



-100 



Stal3 



Stall 



Sta7 



Sta4 



Stal 



1 1 1 1 1 — 



100 200 300 



Benz(a)anthracene, ppb dw 



400 



12 -i 



us 



=3 io 



u 



&> o R ' 



a b 6 



o o 

 §h 4 

 'S « 



* 



Stall 

 Sta7 Sta4 



SStal3-L 



Stal 



— i ■ 1 ' 1 ' 1 ' 1 — 



1000 2000 3000 4000 5000 



Total PAH, ppb dw 



6000 



7000 



Figure 3. Correspondence between incidence of micronuclei (mean + standard deviation) in 

 Strongylocentrotus purpuratus embryos and concentrations of benzo(a)pyrene, benz(a)anthracene, 

 and tPAH in sediments. 



52 



