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Investigation of HfO⁺ interference in the determination of platinum in a catalytic converter (cordierite) by inductively coupled plasma mass spectrometry

Magali Parent, Hans Vanhoe (UGent) , Luc Moens (UGent) and Richard Dams (UGent)
(1997) TALANTA. 44(2). p.221-230
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Abstract
The determination of Pt in cordierite is subject to strong interference by spectral overlap from HfO+ ions with all Pt isotopes. Two mathematical correction methods based on the HfO+Hf+ ratio and a method for the chemical separation of Hf based on adsorption chromatography and isotope dilution were investigated to correct for this interference. Flow infection was used to prevent clogging of the cone orifice. To enhance the sensitivity and thus lower the detection limit, thermospray nebulization was used for sample introduction and the method was compared with pneumatic nebulization. In addition, the memory effects were evaluated for both systems. Analysis of artificial solutions (1 ng Pt ml(-1)) yielded results within 3% of the true value. The Pt content (ca. 50 ng g(-1)) of a cordierite sample, previously exposed to exhaust gases, could be determined with precisions of about 10-25% and the results agreed with earlier determinations by other workers.
Keywords
inductively coupled plasma mass spectrometry, cordierite, isotope dilution, platinum, AIRBORNE PARTICULATE MATTER, ICP-MS, FLOW-INJECTION, SAMPLE INTRODUCTION, GEOLOGICAL-MATERIALS, DISSOLVED SOLIDS, TRACE-ELEMENTS, NEBULIZATION, DESOLVATION, PALLADIUM

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Citation

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Chicago
Parent, Magali, Hans Vanhoe, Luc Moens, and Richard Dams. 1997. “Investigation of HfO+ Interference in the Determination of Platinum in a Catalytic Converter (cordierite) by Inductively Coupled Plasma Mass Spectrometry.” Talanta 44 (2): 221–230.
APA
Parent, M., Vanhoe, H., Moens, L., & Dams, R. (1997). Investigation of HfO+ interference in the determination of platinum in a catalytic converter (cordierite) by inductively coupled plasma mass spectrometry. TALANTA, 44(2), 221–230.
Vancouver
1.
Parent M, Vanhoe H, Moens L, Dams R. Investigation of HfO+ interference in the determination of platinum in a catalytic converter (cordierite) by inductively coupled plasma mass spectrometry. TALANTA. 1997;44(2):221–30.
MLA
Parent, Magali, Hans Vanhoe, Luc Moens, et al. “Investigation of HfO+ Interference in the Determination of Platinum in a Catalytic Converter (cordierite) by Inductively Coupled Plasma Mass Spectrometry.” TALANTA 44.2 (1997): 221–230. Print.
@article{181798,
  abstract     = {The determination of Pt in cordierite is subject to strong interference by spectral overlap from HfO+ ions with all Pt isotopes. Two mathematical correction methods based on the HfO+Hf+ ratio and a method for the chemical separation of Hf based on adsorption chromatography and isotope dilution were investigated to correct for this interference. Flow infection was used to prevent clogging of the cone orifice. To enhance the sensitivity and thus lower the detection limit, thermospray nebulization was used for sample introduction and the method was compared with pneumatic nebulization. In addition, the memory effects were evaluated for both systems. Analysis of artificial solutions (1 ng Pt ml(-1)) yielded results within 3\% of the true value. The Pt content (ca. 50 ng g(-1)) of a cordierite sample, previously exposed to exhaust gases, could be determined with precisions of about 10-25\% and the results agreed with earlier determinations by other workers.},
  author       = {Parent, Magali and Vanhoe, Hans and Moens, Luc and Dams, Richard},
  issn         = {0039-9140},
  journal      = {TALANTA},
  keyword      = {inductively coupled plasma mass spectrometry,cordierite,isotope dilution,platinum,AIRBORNE PARTICULATE MATTER,ICP-MS,FLOW-INJECTION,SAMPLE INTRODUCTION,GEOLOGICAL-MATERIALS,DISSOLVED SOLIDS,TRACE-ELEMENTS,NEBULIZATION,DESOLVATION,PALLADIUM},
  language     = {eng},
  number       = {2},
  pages        = {221--230},
  title        = {Investigation of HfO\unmatched{207a} interference in the determination of platinum in a catalytic converter (cordierite) by inductively coupled plasma mass spectrometry},
  url          = {http://dx.doi.org/10.1016/S0039-9140(96)02037-1},
  volume       = {44},
  year         = {1997},
}

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