Table 6. -Sorption time oonstants (in minutes) for ponderosa pine 



needle litter beds. Desorption conditions: 80° F (27° C) and 

 hwvidity change from 90 to 20 percent. Adsorption conditions: 

 80° F and humidity change from 20 to 90 percent 







Time period 







REPLICATES ; 



1 



2 : 3 : 4 



: 5 



] Average 



LOADING: BULK DENSITY 0.005 g/cm^ 



Desorption 



1 



271 



6 



390 







265 



1 



100 



8 



108 



7 



227 



2 



2 



250. 



4 



281 



5 



348 



7 



350. 



8 



124 



8 



271 



2 



3 



280 



5 



303 



2 



397 







299 



6 



93 



8 



274. 



8 



Average 



267 



5 



324 



9 



336. 



9 



250 



4 



109 



1 







Adsorption 

 1 



1/ 

















-• 





-- 





2 



443 



7 



355 



9 



394 



4 



149 



8 



60 



9 



280 



9 



3 



285 



7 



343 



.9 



175 



1 



255 



5 



152 



2 



242 



5 



r\v J. Ci ti tJ 



364 



7 



349 



9 



284 



8 



202 



7 



106 



6 









LOADING: BULK 



DENSITY 



0.015 



g/ cm^ 









Desorption 

 1 



356 



3 



439 



.6 



482 



1 



87 



5 



40 



1 



281 



1 



2 



285 







317 



.5 



346. 



8 



294 



7 



96 



2 



268 







3 



451 



8 



372 



.6 



298 



8 



129 







91 



8 



268 



8 



4 



384 



6 



434 



.4 



243. 







216 







84 







272 



4 



5 



264 



4 



315 



.0 



279 



3 



320 



9 



148 



9 



265 



7 





307 



3 



346 



.4 



383 







149 



3 



1 39 



7 



265 



I 



Average 



341 



6 



370 



. 9 



338 



8 



199 



6 



100 



1 







Adsorption 

 1 



452 



9 



404 



.2 



369. 



8 



65 



4 



27 







263 



9 



2 



291 



7 



458 



.0 



184 



7 



335 



9 



107 



5 



275 



5 



3 



343 



2 



472 



.8 



444 







132 







30 







284 



4 



4 



292 



2 



403 



.8 



462 







78 







120 







271 



2 



5 



307 



5 



459 



. 3 



353 



8 



118 



2 



103 



6 



268 



5 



6 



393 



9 



595 



. 8 



247 



4 



89 



6 



71 



7 



279 



7 



Average 



346 



9 



465 



.6 



343 



6 



136 



5 



76 



6 









LOADING: 



BULK 



DENSITY 



0.045 



g/cm^ 









Desorption 

 1 



271 



1 



351 



.8 



194 



4 



120 







52 



4 



197 



9 



2 



312 



8 



413 



.9 



296 







210 



2 



55 



1 



257 



6 



3 



371 



5 



514 



.5 



269 



2 



120 



2 



66 



1 



268 



3 



Average 



318 



5 



426 



. 7 



253 



2 



150 



1 



57 



.9 







Adsorption 

 1 



474. 



8 



239 



6 



277. 



5 



24. 



1 



333. 



2 



269. 



8 



2 



353. 



6 



324 



5 



230. 



7 



45. 



1 



37. 



4 



198. 



3 



3 



374. 



2 



358 



9 



196. 



3 



133. 



3 



48. 



9 



222. 



3 



Average 



401. 







307 



7 



234. 



8 







139. 



8 







— Malfunction in the environmental chamber during absorption 

 phase prevented the accumulation of data for the first run. 



27 



