Source apportionment by positive matrix factorization on elemental concentration obtained in PM10 and biomonitors collected in the vicinities of a steelworks

Journal article (2016)

Authors

J. Murias Gomes Lage RST/Applied Radiation & Isotopes - AS , Lisbon Technical University
H.T. Wolterbeek RST/Radiation, Science and Technology
Miguel A. Reis Lisbon Technical University
Paula C. Chaves Lisbon Technical University
Sílvia Garcia Instituto de Soldadura e Qualidade
Susana Marta Almeida Lisbon Technical University
Department
RST/Radiation, Science and Technology
Air pollution Steelworks PM10 Biomonitors Elements K-INAA
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Published Date

01-07-2016

Language

English

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Department

RST/Radiation, Science and Technology

Abstract

The objective of this study was to assess the impact of steelworks emissions in its vicinity through chemical element analysis. Two approaches were used: instrumental monitoring and biomonitoring using transplanted lichens. Element contents in filters and lichens were determined by k0-INAA and PIXE and sources identification was performed by the receptor model positive matrix factorization. PM10 data indicated that the steelworks has an important impact on the air quality, having several sources associated with its processes been identified. Lichen analyses showed that this impact decrease significantly with the distance to the factory.