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Bioavailability of fine dispersed platinum as emitted from automotive catalytic converters

A model study
 

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Science of the Total Environment 228 (1999), pp.219-242
ISSN: 0048-9697
English
Journal Article
Fraunhofer ITA ( ITEM) ()
bioavailability; analysis; automobile catalytic converter; platinum; speciation

Abstract
Automobile exhaust catalytic converters emit fine dispersed elemental platinum, Pt(0), in the nanometer range coated on larger aluminium oxide carrier particles. A pre-requisite for a potential systemic toxic effect of the emitted platinum is its bioavailability which was investigated using laboratory animals. To this end, a model substance was synthesised which consisted of aluminium oxide particles <= 5 um onto which platinum particles >= 4 nm were deposited by a calcination process. These particles closely resemble those emitted from automobile exhaust converters.

: http://publica.fraunhofer.de/documents/B-63837.html