Determination of ruthenium in organic solutions by flame atomic absorption spectrometry, with ethanol and methyl isobutyl ketone as solvents

A flame atomic absorption spectrometric method is described for the determination of ruthenium in organic solutions containing toluene, 1-hexene, 1-heptanol and 1-heptanal. Ethanol and methyl isobutyl ketone (MIBK) were tested as solvents. In addition to burner position and acetylene flow, the compo...

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Bibliographic Details
Published in:Analytica chimica acta 1994-10, Vol.296 (2), p.195-203
Main Authors: Kauppinen, Matti, Smolander, Kimmo
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Ethanol
Exact sciences and technology
Flame atomic absorption spectrometry
Hydroformulation
Methyl isobutyl ketone (MIBK)
Ruthenium
Spectrometric and optical methods
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Summary:A flame atomic absorption spectrometric method is described for the determination of ruthenium in organic solutions containing toluene, 1-hexene, 1-heptanol and 1-heptanal. Ethanol and methyl isobutyl ketone (MIBK) were tested as solvents. In addition to burner position and acetylene flow, the composition of the organic solution significantly affected the absorbance. Ethanol has several advantages over MIBK as a solvent: sensitivity is better and the detection limit lower, the smell is less unpleasant, the burner and chamber assembly keep cleaner and the burner position is less critical. Ethanol is an excellent solvent for the analysis of hydroformulation solutions containing more than 50 μg/ml of ruthenium. Synthetic and real hydroformulation solutions containing 50–2000 μg/ml Ru were successfully analysed after dilution with appropriate amounts of ethanol and toluene.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(94)80263-7