in water byproducts: manganese oxide hydrate; addition of diluted H2SeO3 soln. to HMnO4 soln. until the soln. is colorless;; filtration; concg. of the filtrate;;
参考文献
Ann. Chim. Phys., , vol. 15, p. 208 - 208
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, , vol. 123, p. 236 - 236