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

✍ Scribed by Matti Kauppinen; Kimmo Smolander

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 750 KB
• Volume: 296
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(94)80263-7

✦ Synopsis

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 pg/ml of ruthenium. Synthetic and real hydroformulation solutions containing 50-24lOO pg/ml Ru were successfully analysed after dilution with appropriate amounts of ethanol and toluene.