Spectrochemical Determination of Impurities in Uranium Following Solvent Extraction Using Tributyl Phosphate in Methyl Isobutyl Ketone

2009 ◽  
pp. 106-106-7
Author(s):  
JG Chang ◽  
RL Graff
Keyword(s):  
Solvent Extraction ◽  
Tributyl Phosphate ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Determination Of Impurities

Pre-concentration of Ta(V) by solvent extraction before determination of trace amounts of Ta in Nb and Nb compounds

2016 ◽  
Vol 8 (26) ◽  
pp. 5304-5310
Author(s):  
Magdalena Turkowska ◽  
Marek Smolik
Keyword(s):  
Solvent Extraction ◽  
Methyl Isobutyl Ketone ◽  
Extraction Process ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Wide Range

The paper presents the results of a study on the efficiency of the separation of Ta(V) and Nb(v) from fluoride solutions by solvent extraction with methyl isobutyl ketone with a view to applying the extraction process to the purification of Nb from Ta and for the pre-concentration of Ta prior to its determination in Nb and its compounds over a wide range of initial concentrations.

Determination of Some Nitrophenols by Atomic Absorption Spectrometry (AAS) After Extraction of Ionic Associates Involving the Bipyridylocopper(II) or Phenanthrolinocopper(II) Complex

1994 ◽  
Vol 59 (10) ◽  
pp. 2227-2234 ◽  
Author(s):  
Václav Stužka ◽  
Jaromír Souček
Keyword(s):  
Molecular Weight ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Methyl Isobutyl Ketone ◽  
Absorption Spectrometry ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Indirect Determination ◽  
Ionic Associates

A new method has been developed for the indirect determination of nitroso- and nitrophenols by atomic absorption spectrometry (AAS) after extraction of ionic associates involving bipyridylocopper(II) (CuDP) or phenanthrolinocopper(II) (CuPH) complexes. Nitrobenzene and methyl isobutyl ketone appeared to be suitable for the extraction. It was possible to determine several tenths to hundredths of a milligram of nitrophenol in a litre. Extractable associates with CuDP and CuPH are formed by phenols possessing two substituents or by higher molecular weight phenols such as naphthol or hydroxyquinoline. Monosubstituted phenols fail to form associates of this kind.

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