Summary
The conditions for the formation of a rhodium compound with tin(II) and Rhodamine 6G, in HCl medium, and their flotation with organic solvents of low polarity have been examined. The effect of the organic solvent on the flotation has been observed. The compound with Rhodamine 6G, separated and washed, is dissolved in acetone. The acetone solution is a basis of the developed sensitive and precise flotation-spectrophotometric method. The molar absorptivity in this method is 4.0×105 at 530 nm. Beer's law is obeyed in the concentration range 0.04–0.5μg Rh/ml. The components molar ratios in the isolated compound were determined, and the formula [(R6G+)3Rh(SnCl3 −)4]·[(R6G+)(SnCl3 −)] was proposed. The effect of the other platinum metals on the determination of rhodium with Rhodamine 6G was examined.
Zusammenfassung
Die Bildung einer Rhodiumverbindung mit Sn(II) und Rhodamin 6G in salzsaurem Medium und deren Flotation mit organischen Lösungsmitteln geringer Polarität wurden untersucht. Der Einfluß des organischen Lösungsmittels auf die Flotation ist sicher. Die Verbindung mit Rhodamin 6G wurde abgetrennt, gewaschen und in Aceton gelöst. Diese Lösung bietet die Grundlage für die ausgearbeitete genaue spektrophotometrische Methode. Die molare Absorptivität beträgt 4,0×105 bei 530 nm. Im Konzentrationsbereich 0,04–0,5μg Rh/ml wird das Beersche Gesetz befolgt. Die Bestimmung des Verhältnisses der Komponenten ergab als Formel [(R6G+)3Rh(SnCl3 −)4]·[(R6G+)(SnCl3 −)]. Der Einfluß anderer Platinmetalle auf die vorgeschlagene Bestimmungsmethode wurde untersucht.
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References
J. F. Young, R. D. Gillard, and G. Wilkinson, J. Chem. Soc.1964, 5176.
C. Furlani, E. Zinato, and F. Furlan, Atti Accad. Naz. Lincei, Rend. Cl. Sci, Fis. Mat. Nat.38, 517 (1965).
S. K. Kalinin, K. P. Stolarov, and G. A. Yakovleva, Zh. Analit. Khim.25, 132 (1970).
A. G. Davies, G. Wilkinson, and J. F. Young, J. Amer. Chem. Soc.85, 1692 (1963).
S. Ivasaki, T. Nagai, E. Miki, K. Mizumachi, and T. Ishimori, Bull. Chem Soc Japan57, 386 (1984).
E. B. Sandell and H. Onishi, Photometric Determination of Traces of Metals. General Aspects, New York: Wiley. 1978.
S. I. Ginzburg, N. A. Ezerskaya, I. V. Prokof eva, N. V. Fedorenko, V. I. Shlenskaya, and N. K. Belskii, Analiticheskaya Khimiya Platinowykh Metallov, Moscow: 1972.
F. E. Beamish and J. C Van Loon, Recent Advances in the Analytical Chemistry of the Noble Metals, Oxford: Pergamon Press. 1972.
A. K. Babko, Z. I. Chalaya, and V. F. Mikitchenko, Zavod. Lab.32, 270 (1966).
A. Mizuike and M. Hiraide, Pure Appl. Chem.54, 1555 (1982).
Z. Marczenko and E. Kowalczyk, Analyt. Chim. Acta108, 261 (1979).
Z. Marczenko, CRC Crit. Rev. Analyt. Chemistry11, 195 (1981).
Z. Marczenko, Spectrophotometric Determination of Elements, Chichester: Ellis Horwood, 1976.
M. Bent and C. French, J. Amer. Chem. Soc.63, 568 (1941).
Z. Marczenko and K. Kalinowski, Analyt. Chim. Acta153, 219 (1983).
M. Mojski, Chem. Anal. (Warsaw)25, 799 (1980).
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This work was supported by Research Program MR-I-32.
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Kalinowski, K., Marczenko, Z. Flotation-spectrophotometric determination of rhodium using stannous chloride and Rhodamine 6G. Mikrochim Acta 85, 167–175 (1985). https://doi.org/10.1007/BF01198290
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DOI: https://doi.org/10.1007/BF01198290