Mapping of Platinum Group Metals in Automotive Exhaust Three-Way Catalysts Using Laser-Induced Breakdown Spectrometry
- 3 September 1999
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 71 (19) , 4385-4391
- https://doi.org/10.1021/ac9902998
Abstract
The use of laser-induced breakdown spectrometry for spatial distribution analysis of platinum, rhodium, and palladium in car catalytic converters is discussed. Fresh converters were extracted from the car exhaust system, cut in pieces of an appropriate size, and analyzed for mapping purposes. Spectral detection, pulse energy, and beam focal conditions were optimized according to the ablation behavior of the material. Difficulties in distribution analysis caused by the complex elemental composition of the sample were overcome by an extensive spectral analysis using appropriate internal standards. Data on the spatial distribution of the active metals in both the axial and radial directions of the catalytic structures are presented.Keywords
This publication has 20 references indexed in Scilit:
- Distribution of metal impurities in silicon wafers using imaging-mode multi-elemental laser-induced breakdown spectrometryJournal of Analytical Atomic Spectrometry, 1999
- Analytical problems in the determination of platinum-group metals in urine by quadrupole and magnetic sector field inductively coupled plasma mass spectrometryPublished by Elsevier ,1998
- Laser-Induced Breakdown Spectroscopy for Real-Time Detection of Halon Alternative AgentsAnalytical Chemistry, 1998
- Nanometric range depth-resolved analysis of coated-steels using laser-induced breakdown spectrometry with a 308 nm collimated beamJournal of Analytical Atomic Spectrometry, 1998
- Surface and tomographic distribution of carbon impurities in photonic-grade silicon using laser-induced breakdown spectrometryJournal of Analytical Atomic Spectrometry, 1998
- Ultratrace determination of platinum in environmental and biological samples by electrothermal atomization laser-excited atomic fluorescence using a copper vapor laser pumped dyeJournal of Analytical Atomic Spectrometry, 1998
- On-line and in-situ detection of lead aerosols by plasma-spectroscopy and laser-excited atomic fluorescence spectroscopyAnalytica Chimica Acta, 1997
- Direct Determination of Trace Noble Metals (Palladium, Platinum and Rhodium) in Automobile Catalysts by Glow Discharge Mass SpectrometryJournal of Analytical Atomic Spectrometry, 1997
- Catalytic automotive exhaust aftertreatmentProgress in Energy and Combustion Science, 1997
- Laser-microprobe elemental determinations with an optical multichannel detection systemAnalytica Chimica Acta, 1981