Cornelis, Geert
- Institutionen för mark och miljö, Sveriges lantbruksuniversitet
Forskningsartikel2018Vetenskapligt granskad
Folens, Karel; Van Acker, Thibaut; Bolea-Fernandez, Eduardo; Cornelis, Geert; Vanhaecke, Frank; Du Laing, Gijs; Rauch, Sebastien
Elevated platinum(Pt) concentrations are found in road dust as a result of emissions from catalytic converters in vehicles. This study investigates the occurrence of Pt in road dust collected in Ghent (Belgium) and Gothenburg (Sweden). Total Pt contents, determined by tandem ICP-mass spectrometry (ICP-MS/MS), were in the range of 5 to 79 ng g(-1), comparable to the Pt content in road dust of other medium-sized cities. Further sample characterization was performed by single particle (sp) ICP-MS following an ultrasonic extraction procedure using stormwater runoff for leaching. The method was found to be suitable for the characterization of Pt nanoparticles in road dust leachates. The extraction was optimized using road dust reference material BCR-723, for which an extraction efficiency of 2.7% was obtained by applying 144 kJ of ultrasonic energy. Using this method, between 0.2% and 18% of the Pt present was extracted from road dust samples. spICP-MS analysis revealed that Pt in the leachate is entirely present as nanoparticles of sizes between 9 and 21 nm. Although representing only a minor fraction of the total content in road dust, the nanoparticulate Pt leachate is most susceptible to biological uptake and hence most relevant in terms of bioavailability. (C) 2017 Elsevier B.V. All rights reserved.
Platinum; Nanoparticles; Road dust; Single particle ICP-MS; Catalytic converters; ICP-MS/MS
Science of the Total Environment
2018, Volym: 615, sidor: 849-856 Utgivare: ELSEVIER SCIENCE BV
SDG9 Hållbar industri, innovationer och infrastruktur
SDG11 Hållbara städer och samhällen
Miljövetenskap
DOI: https://doi.org/10.1016/j.scitotenv.2017.09.285
https://res.slu.se/id/publ/93047