THE DETERMINATION OF IRON IN YTTRIUM

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Talanta (England)

DOI:https://doi.org/10.1016/0039-9140(60)80242-1· OSTI ID:4095291

Hibbits, J O; Davis, W F; Menke, M R

>An improved method for determining iron in yttrium metal or Y/sub 2/O/ sub 3/ was investigated further in order to determine its applicability to a wider range of samples. The method consists essentially of the extraction of Fe/ sup 3+/ from a 6M HCl solution into a solution of tri-n-octylphosphine oxide (TOPO) in cyclohexane. The iron is re-extracted into 3M H/sub 2/SO/sub 4/, an equal volume of HCl is added and the iron is again extracted with TOPO. An aliquot of the extract is used for development of the 1,10-phenanthroline complex. The method is almost specific for iron. Only a few elements interfere, even when present in large quantities, and ff these elements all but gallium, tellurium, and silicon produce a warning turbidity in the colored solution. No interference with the determination of 100 mg of iron was caused by 10 mg of Al, Sb/sup 3+/ , As/sup 3+/, Ba, Be, Bi, B, Cd, Ca, Ce/sup 3+/, Ce/sup 4+/, Cr/sup 3+/ Cr/sup 6+/ , Cs, Co, Cu, Dy, Er, Eu/sup 3/ >s/sup +/, Gd, Ge, Au, Hf, Ho, In, I, Ir, La, Pb, Li, Lu, Mg, Mn/sup 2+/, Mn/sup 7+/, Hg/sup 2 / +>s, Nd, Ni, Nb, Pd, P, Pt, K, Pr, Re/sup 7+/, Rh, Rb, Sm, Sc, Se/sup 4+/, Na, Sr, Ta, Tb, Tl, Th, Tm, Sn, Ti, V, Yb, Zn; 5 mg of Si, Zr; 1 mg of Mo, W, Ga; 0.1 mg of Te, or U, or 100 mg of Br or T. (auth)

• Research Organization: General Elec. Co., Aircraft Nuclear Propulsion Department, Cincinnati, Ohio
• NSA Number: NSA-15-008735
• OSTI ID: 4095291
• Journal Information: Talanta (England), Journal Name: Talanta (England) Vol. Vol: 6; ISSN TLNTA
• Country of Publication: Country unknown/Code not available
• Language: English

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