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期刊论文
Determination of trace osmium by supramolecular catalytic kinetic spectrofluorimetry of beta-CD-osmium-KBrO3-o-vanillin furfuralhydrazone
Talanta 63(2004)825-831,-0001,():
0 and 55℃. Under optimum conditions, beta-CD-osmium (IV)-KBrO3-OVFH supramolecular kinetic catalytic reaction system had excitation and emission maxima at 337 and 490 nm, respectively. The linear range of this method was 0-120ng/ml−1 with a R.S.D. of 1.1%, and the detection limit was 0.38ng/ml−1. The effect of interferences was studied. Distillation was used to separate osmium from interfering elements in the samples. The proposed method was applied successfully to determine osmium(IV) in synthetic mixture and mineral samples, the results were well consistent with the reference standard values.
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