1.0 



0.9 



0.8 



0.7 



0.6 



0.5 



0.4 



0.3 



0.2 



0.1 



kt/l 2 = 0.0001 — a 



1 



/ 



s 





kt/r = 



0— ^ 



1 . 





<// 2 = 0.0004 





/ 



, ii 







li / 



i 



f/7 2 - 0.0 



1 









/ 

 i / 















/ 

 / 

 / 













/ 

 1 

 1 















/ 













/ 

 / 



1 f 



' 1 













/ 



\ 















/I 

 J) 













0.1 0.2 0.3 0.4 0.5 0.6 0.7 



z/l 



Figure Al. Vertical distribution of concentration as a function 

 of time. 



REVERSE SIDE BLANK 



21 



