Spectrophotometric determination of ruthenium with diphenylthiovioluric acid |
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| Authors: | Chawla R S Singh R P Trikha K C |
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| Affiliation: | Department of Chemistry University of Delhi, Delhi-7 A.R.S.D. College, New Delhi, India |
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| Abstract: | Diphenylthiovioluric acid (DPHTVA) reacts with ruthenium(III) to form a complex which has an absorbance maximum at 520 nm. Effects of pH, heating time, buffer and reagent have been studied. DPHTVA has been found to be a sensitive reagent for ruthenium(III) (sensitivity = 0.0044 μg Ru/cm2 for log I0/I = 0.001), and has been made selective by the use of masking agents. The composition of the complex as revealed by different methods is 1:2 (ruthenium:DPHTVA). |
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