http://www.cnr.it/ontology/cnr/individuo/prodotto/ID167590
Historical PCB fluxes in the Mexico City Metropolitan Zone as evidenced by a sedimentary record from the Espejo de los Lirios lake. (Articolo in rivista)
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- Label
- Historical PCB fluxes in the Mexico City Metropolitan Zone as evidenced by a sedimentary record from the Espejo de los Lirios lake. (Articolo in rivista) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.chemosphere.2009.01.068 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Piazza R.; Ruiz-Fernández A.C.; Frignani M.Mauro ; Vecchiato M.; Bellucci L.G.; Gambaro A.; Pérez-Bernal L.H.; Páez-Osuna F. (literal)
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- doi:10.1016/j.chemosphere.2009.01.068 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (a) Dipartimento di Scienze Ambientali, Università di Venezia, Dorsoduro 2137, 30123 Venezia, Italy
(b) Istituto per la Dinamica dei Processi Ambientali, CNR, Dorsoduro 2137, 30123 Venezia, Italy
(c) Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, P.O. Box 811, 82000 Mazatlán, Mexico
(d) CNR, Istituto di Scienze Marine, Sezione di Geologia Marina, Via Gobetti 101, 40129 Bologna, Italy (literal)
- Titolo
- Historical PCB fluxes in the Mexico City Metropolitan Zone as evidenced by a sedimentary record from the Espejo de los Lirios lake. (literal)
- Abstract
- The accumulation of PCBs over time was studied in a sediment core collected from Espejo de los Lirios, an ecological reserve located within the heart of Cuatitlan Izcalli, in the Northern part of Mexico City Metropolitan Zone. A Pb-210-derived chronology, was used to reconstruct the historical PCB fluxes to the site during 84 yrs (191195). The highest input fluxes occurred in the 1977, after a significant increase after the late 1940s. This trend is clearly the consequence of the increasing emissions that are related to the onset of industrial activities starting from early 1970s. A phase of decrease, after the ban of the use in open systems, ended in 1989 and in 1995, at the time of sampling, the trend was toward a new increase to the highest levels. A reconstruction of PCB atmospheric concentration from sedimentary fluxes is attempted; and the estimate suggests that PCBs concentrations in the air of the Cuautitlán Izcalli seem not of concern. Nonetheless, the contamination levels found in the sediments are relatively high, reaching values above the threshold effect level (TEL) guidelines and, in two cases, close to the probable effect level (PEL) which mean that some adverse effects on the fauna may have occurred all over the time interval represented by the core. (literal)
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