Solubility product relations in the rare earth hydrous hydroxides

✍ Scribed by Clifford C. Meloche; Frederick Vrátný

• Publisher: Elsevier Science
• Year: 1959
• Tongue: English
• Weight: 256 KB
• Volume: 20
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(59)80090-8

✦ Synopsis

The complexing polymer sodium diallyl phosphate (NaDhI') when usccl in conjunction with disodium ethylene diaminc tctraacctatc (Xa2EIDTh) separates beryllium quantitatively from alkaline earths (Cn and Sr), ferric and tlivalent cations of the first transitional period, aluminium and lanthanicles, cadmium and mcrcury( I I), bismuth ant1 poloniutn( IV). The higl1 affinity of NaDAP for beryllium should permit its concentration by scvcral orders of rnngnitudc, when present as a minor or trace component in a mixture of polyvalcnt cations. The results arc cornpax-cd with tl1ose obtained using sulphonatcd resin. L'allylphosphate dc sodium polymkc, cn prdscncc cl'dthyl~nccliaininctL'trac6tatc disodiquc, permet clc sCparcr qu:lntitativemcnt Ic glucinium d'avcc dc nomhrcux autrcs cations. I,cs r&111tats sont comparbs avcc CL'IIX obtcnus !L l'aitlc cl'unc rdsinc sulfon6c. Polymercs Diallyl-natriumphosphat, in Gcgcnwnrt tics IX11atriumsalzcs tlcr Athylcndiamintctracssigsiurc crtnhglicht cinc quantitative Ahtrcnnung tics I3Crylliums von anl1lrcicl1en mchrwcrtigcn Kationcn. Die Ergcbnissc wcrtlcn mit dcnjcnigen, tlic tnit 1 Iilfc cincs sulfonicrtcn Harzcs crhaltcn wurdcn, vcrglichcii. IIEl'EIIlSNCJS 1 I-I. KAKIHANA.