View PDF Version
 
DOI: 10.1039/A605159F (Paper) Reference Section for: J. Anal. At. Spectrom., 1997, 12, 239-246

Determination of Platinum, Palladium, Rhodium and Titanium in Automotive Catalytic Converters Using Inductively Coupled Plasma Mass Spectrometry With Liquid Nebulization

(Note: The full text of this document is currently only available in the PDF Version )

OLEG V. BORISOV, DAVID M. COLEMAN, KRISTINE A. OUDSEMA and R. O. CARTER III

Abstract

ICP-MS was used for the determination of Pt, Pd, Rh and Ti in automotive catalytic converters. A microwave digestion procedure employing a mixture of H2O, HF, HCl and HNO3 was studied and compared with a procedure using a mixture of H2SO4, H3PO4 and aqua regia. The use of the latter results in significant losses of Pt and Ti. The influence of sample size on the recoveries of Pt, Rh, Ti and some REEs is discussed. It is shown that a sample amount larger than 0.12 g results in incomplete recoveries of REEs with no significant loss of the other elements. Instrument calibration using the standard addition method and matrix matching are discussed. It is shown that close matrix matching using cordierite, the substrate, with a washcoat, the catalyst support, provides spectral interference correction for polyatomic oxide species. The results obtained are in good agreement with those obtained by wavelength-dispersive X-ray fluorescence analysis.

References

  1. S. Kallmann and P. Blumberg, Talanta, 1980, 27, 827 CrossRef CAS.
  2. A. I. Kingon and R. F. Davis, in Engineered Materials Handbook, Volume 4. Ceramics and Glasses, technical chairman S. J. Schneider, ASM International, Metals Park, OH, 1991, pp. 758–761 Search PubMed.
  3. S. Kallamann, Talanta, 1976, 23, 579 CrossRef.
  4. A. Thayer, Chem. Eng. News, 1993, 8, 6.
  5. R. Juvonen, E. Kallio and T. Lakomaa, Analyst, 1994, 19, 617 RSC.
  6. S. E. Jackson, B. J. Fryer, W. Grosse, D. C. Healey, H. P. Longerich and D. F. Strong, Chem. Geol., 1990, 83, 119 CrossRef CAS.
  7. A. R. Date, A. E. Davis and Y. Y. Cheung, Analyst, 1987, 112, 1217 RSC.
  8. A. R. Date and A. L. Gray, Spectrochim. Acta, Part B, 1985, 40, 115 CrossRef.
  9. Z. Šulcek and P. Povondra, Methods of Decomposition in Inorganic Analysis, CRC Press, Boca Raton, FL, 1989, pp. 212–217 Search PubMed.
  10. K. A. Oudsema, PhD Thesis, Wayne State University, 1993 Search PubMed.
  11. Gmelins Handbuch der anorganische Chemie, Verlag Chemie, Berlin, 1939, System No. 68, Platin, Teil C1, p. 46 Search PubMed.
  12. J. A. Brown, Jr., F. W. Kunz and R. K. Belitz, J. Anal. At. Spectrom., 1991, 6, 393 RSC.
  13. E. S. Beary and P. J. Paulsen, Anal. Chem., 1995, 67, 3193 CrossRef CAS.
  14. Introduction to Microwave Sample Preparation: Theory and Practice, ed. Kingston, H. M., and Jassie, L. B., American Chemical Society, Washington, DC, 1988, pp. 41–42 Search PubMed.
  15. S. H. Tan and G. Horlick, J. Anal. At. Spectrom., 1987, 2, 745 RSC.