A29 



JOSEPH L. McCarthy 



Northwest Pulp and Paper Association sponsorship of an 

 Investigation program we Initiated research In what I 

 shall call the vanillin method for conducting the unique 

 determination of spent sulfite lignln concentration. A 

 preliminary report on this procedure was published by Mr. 

 Fellcetta and me under the title "Spent Sulfite Liquor 

 XI Preliminary State of the Possibly Unique Determination 

 of Lignln Sulfonates in Water" published in the TAPPI 

 magazine 46, I963. 



Further work on this method is now in 

 progress in collaboration with Dr. Bjorn Hrutflord at 

 the University of Washington with the assistance of a 

 grant of funds in the amount of $47,896 over a three-year 

 period from the Research and Training Grants Program of 

 the Federal Water Pollution Control Administration, 

 Department of Interior. 



At present it appears that this vanillin 

 method can now be carried out successfully to estimate 

 uniquely the concentration of spent sulfite liquor In 

 fresh waters, and we are hopeful that a somewhat modified 

 procedure can soon be specified which will give satis- 

 factory results in salt waters. 



Thank you for the opportunity to make this 

 statement. I shall be glad to try to answer any questions 



