Scanning Laser Ablation-ICP-MS Tracking of Platinum Group Elements in Urban Particles
Artikel i vetenskaplig tidskrift, 2002

While it has now been demonstrated that platinum group elements (PGE) are released from automobile catalysts into the environment, less is known about the form in which they are emitted and transported. Here we show that scanning laser ablation-inductively coupled plasma-mass spectrometry (scanning laser ablation-ICP-MS) can identify and track individual particles released from automobile catalysts present in environmental particulates and sediments. Particles with high PGE concentrations were found in the exhaust of gasoline and diesel vehicles equipped with catalytic converters. The PGE-Ce association in individual particles provides a definitive fingerprinting for tracking catalyst particles in environmental compartments, while relative PGE signal intensity is an indication of the catalyst type. Scanning laser ablation-ICP-MS of road and aquatic sediments revealed a few PGE containing catalyst particles and it was possible to identify catalyst types for the origin of these particles.

ICP-MS

Laser ablation

Automobile exhaust

Platinum group elements

Tracking

Urban particles

Författare

Sebastien Rauch

Chalmers, Institutionen för Vatten Miljö Transport, Vattenprocessteknik

Greg Morrison

Chalmers, Institutionen för Vatten Miljö Transport, Vattenprocessteknik

Mariella Moldovan

The Science of the Total Environment

Vol. 286 243-251

Ämneskategorier

Annan naturresursteknik