Zeng C, Lu JP, Xue MH, Tan FW, Wu XY.
Guang Pu Xue Yu Guang Pu Fen Xi. 2014 Jul;34(7):1959-62.Based on their similarity in chemical properties, rare earth elements were able to form stable coordinated compounds with arsenazo III which were extractable into butanol in the presence of diphenylguanidine. The butanol was removed under reduced pressure distillation; the residue was dissolved with diluted hydrochloric acid. As was released with the assistance of KMnO4 and determined by hydrogen generation-atomic fluorescence spectrometry in terms of rare earth elements. Read More