- 123 - 



Figure V,8. Two-way eleotrochromatographio separation of cadmium, 

 lead, oupric, bismuth, and mercuric ions. One-way- 

 migration in 0,1 M lactic acid (left) followed by 

 transverse migration after treatment with ammonia 

 (right) o Ions located with hydrogen sulfide^^. 



COO© 



Cd PbCu Bi + Hg 



O qO"' 



Cd Cu 



C3 OBi 

 Pb 



