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- W1969965863 abstract "A flame atomic absorption spectrometric method for the determination of rhodium in organic solutions containing toluene, 1-hexene, 1-heptanol and 1-heptanal is described. Methyl isobutyl ketone (MIBK) and ethanol were used as solvents and 1-heptanal as buffering agent. In addition to burner position, the composition of the organic solution significantly affected the absorbance. The recovery of 5 μg/ml rhodium was only 60% in a solution containing 75% MIBK, 20% toluene and 5% hexene, but improved as the ratio of alcohol or aldehyde to hexene increased. When the amount of hexene was reduced to zero and 5% heptanol, 5% heptanal or 2.5% heptanol + 2.5% heptanal was used instead, recoveries were 97%, 92% and 95%, respectively. The recoveries of 10 μg/ml rhodium in solutions containing 75% ethanol, 20% toluene and 2.5% hexene + 2.5% heptanol, heptanal or their mixtures were 97%, 104% and 103%, respectively. Ethanol has several advantages over MIBK as a solvent: it is cheaper, the smell is less unpleasant, the burner and chamber assembly keep cleaner and sensitivity is slightly better." @default.
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- W1969965863 date "1994-01-01" @default.
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- W1969965863 title "Determination of rhodium in organic solutions by flame atomic absorption spectrometry, with methyl isobutyl ketone and ethanol as solvents" @default.
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- W1969965863 doi "https://doi.org/10.1016/0003-2670(94)85006-2" @default.
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