50 



- 40 



E 



< 

 cc 



H 



LU 

 O 



o 

 o 



LU 



9 

 o 



-J 



X 

 CJ 



30 



20 



10 



— ▲■ 



^m • 



ly 







4NB 



1 



1 



*36-hr data. 



1 



10 20 30 40 



LC50, mg/l NITRITE NITROGEN 



Finure 4. Effect of chloride on nitrite toxicity to rainbow 

 trout ( Salmo gairdneri ) . 



234 



