학술논문
A multi-faceted, environmental forensic characterization of a paradigmatic brownfield polluted by hazardous waste containing Hg, As, PAHs and dioxins.
Document Type
Academic Journal
Author
Fernández B; Environmental Technology, Biotechnology and Geochemistry Group, Laboratorio de Metalurgia, Escuela de Minas Energía y Materiales, Universidad de Oviedo, Independencia 13, 33004 Oviedo, Spain.; Lara LM; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain.; Menéndez-Aguado JM; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain.; Ayala J; Environmental Technology, Biotechnology and Geochemistry Group, Laboratorio de Metalurgia, Escuela de Minas Energía y Materiales, Universidad de Oviedo, Independencia 13, 33004 Oviedo, Spain.; García-González N; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain.; Salgado L; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain.; Colina A; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain.; Gallego JLR; Environmental Technology, Biotechnology and Geochemistry Group, INDUROT, Campus de Mieres, University of Oviedo, C/Gonzalo Gutiérrez Quirós. S/N, 33600 Mieres, Spain. Electronic address: jgallego@uniovi.es.
Source
Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
Hg and As mining-metallurgy plants have severely impacted environmental compartments. La Soterraña site (northern Spain) has been previously studied in this context. However, here we used a novel multi-purpose forensic approach to examine accumulations not only of mining-metallurgical waste (volumes above 80,000 t) but also C&D waste as a repository of pollutants (above 10% of As leached in standard tests) at this site. High Hg and As content in very fine grain-size fractions (up to 100,000 mg/kg of As in metallurgy waste below 10 μm) was significant, as was the predominance of As (III) in metallurgy waste. In addition, GC-MS techniques revealed the predominance of PAHs (secondarily Oxy-PAHs and PCBs), which showed a pyrogenic fingerprint, as determined by molecular ratios. Moreover, toxic organometallics (Hg-aromatics) were detected and metallurgy waste was identified as a source of dioxins and furanes (TEQ close to 30). On the basis of our observations, La Soterraña emerges as one of the most polluted sites in Europe and therefore requires urgent remediation. Our key findings indicate that C&D waste should be considered hazardous. Metallurgy waste, in turn, raises maximum concern given the simultaneous presence of toxic inorganic and organic contaminants.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)