>- 



I- 



az 

 O 



LU 

 CJ 

 DC 



o 



A. 



Tri butyl tin chloride 

 (lO-'^mg/IL 







^"'^ Trihexyltin chloride 



(10-2 mg/l) 



I 



Triphen yitin ch loride ^._^ ' 

 (1 0-2 mg/l) / 



^ 



/ 



./ 



/ I 







/ I 



; / 

 / 



°/^ 



/Tr I amy I tin 

 chloride 

 / (10-3 mg/l) 



. / 



0.5 1.0 



LOG TIME, days 



1.5 



> 



DC 



o 



I- 1 



-z. 



UJ 



o 



DC 

 LU 

 Q_ 



O 







0.5 1.0 



LOG TIME, days 



1.5 



Figure 4. The relationship of time of death of 25 percent of Daphnia magna 

 with the concentration of trimethyl tin chloride. 



150 



