Identification of platinum nanoparticles in road dust leachate by single particle inductively coupled plasma-mass spectrometry

被引：45

作者：

Folens, Karel ^{[1
]}

Van Acker, Thibaut ^{[2
]}

Bolea-Fernandez, Eduardo ^{[2
]}

Cornelis, Geert ^{[3
]}

Vanhaecke, Frank ^{[2
]}

Du Laing, Gijs ^{[1
]}

Rauch, Sebastien ^{[4
]}

机构：

[1] Univ Ghent, Fac Biosci Engn, Dept Appl Analyt & Phys Chem, Lab Analyt Chem & Appl Ecochem, Coupure Links 653, B-9000 Ghent, Belgium

[2] Univ Ghent, Dept Analyt Chem, Fac Sci, Campus Sterre,Krijgslaan 281 S12, B-9000 Ghent, Belgium

[3] Swedish Univ Agr Sci, Dept Soil & Environm, Box 7014, S-75007 Uppsala, Sweden

[4] Chalmers Inst Technol, Dept Architecture & Civil Engn, Water Environm Technol, Sven Hultinsgata 8, S-41296 Gothenburg, Sweden

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2018年 / 615卷

关键词：

Platinum; Nanoparticles; Road dust; Single particle ICP-MS; Catalytic converters; ICP-MS/MS; AIRBORNE PARTICULATE MATTER; GROUP ELEMENTS PGE; ICP-MS; AUTOMOBILE CATALYSTS; SOLUBLE PLATINUM; URBAN LAKE; PALLADIUM; RHODIUM; EMISSIONS; SEDIMENTS;

D O I：

10.1016/j.scitotenv.2017.09.285

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页码：849 / 856

页数：8

共 53 条

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