Separation of zirconium through extraction in hydrochloric medium with tri-n-octilamine and its spectrophotometric determination with chloroanilic acid
Description
A procedure is outlined for the spectrophotometric determination of zirconium using its complex with chloroanilic acid in HC1042M. Interfering elements like Fe, Zn, U, Cy, Cd, Sb, Co, Pb, Hg, Tl, Pt, Au, Pd, Ga, In, Mo and W are previously extracted with tri-n-octylamine 7,5%-benzene from 4 M HCL. Then, the acid content of the solution is ascertained to 10 M HCL and zirconium is extracted with the amine. Nb is a strong interference, being extracted by the amine as well as zirconium and absorbing at the same region as zirconium chloroanilate. Zirconium is stripped from the organic phase with Na2CO3. The colour development is done with chloroanilic acid in 2 M HC104 and the measurements at 340 nm. The method allows the determination of 5 micrograms of Zr. The work curve covers the 0.2 - 2.0 μg Zr/mL range. The procedure is being applied to the determination of zirconium in several alloys and in samples containing zinc, magnesium, iron, aluminium, uranium and thorium
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Descreve-se um metodo para a determinacao espectrofotometrica de zirconio pela formacao do complexo com acido clotoanilico em meio HC1042M. Elementos interferentes com Fe, Zn, U, Cu, Cd, Sn, Co, Pb, Hg, Tl, Pt, Au, Pd, Ga, In, Mo e W sao extraidos previamente por tri-n-octilamina 7,5%-benzeno em meio HCL 4 M. Em seguida, acerta-se a concentracao do acido para HCL 10 M e extrae-se o zirconio com o mesmo solvente. Reverte-se o zirconio com solucao de Na2Co3, faz-se o desenvolvimento da cor com acido cloroanilico em HC-104 2M e as leituras em 230 nm. O metodo permite a determinacao de 5 microgramas de Zr. O metodo vem sendo aplicado na determinacao de zirconio em diversas ligas e em amostras contendo zinco, magnesio, ferro, aluminio, uranio e torioFiles
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Additional details
Additional titles
- Original title (Portuguese)
- Separacao de zirconio por extracao em meio cloridrico com tri-n-octilamina e sua determinacao espectrofotometrica com acido cloroanilico
Publishing Information
- Imprint Pagination
- 10 p.
- Journal Issue
- no. 427
- Series
- Publicacao IEA.
- Report number
- IEA--427
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 8331898
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ALLOYS; ALUMINIUM; COPPER; IRON; MAGNESIUM; MICROANALYSIS; QUANTITATIVE CHEMICAL ANALYSIS; SOLVENT EXTRACTION; SPECTROPHOTOMETRY; URANIUM; ZINC; ZIRCONIUM
- Descriptors DEC
- ACTINIDES; ALKALINE EARTH METALS; CHEMICAL ANALYSIS; ELEMENTS; METALS; SEPARATION PROCESSES; TRANSITION ELEMENTS