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Titolo:
Persistent organic pollutants in snow from European high mountain areas
Autore:
Carrera, G; Fernandez, P; Vilanova, RM; Grimalt, JO;
Indirizzi:
CSIC, Inst Chem & Environm Res, Dept Environm Chem, Barcelona 08034, Catalonia, Spain CSIC Barcelona Catalonia Spain 08034 m, Barcelona 08034, Catalonia, Spain
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 2, volume: 35, anno: 2001,
pagine: 245 - 254
SICI:
1352-2310(2001)35:2<245:POPISF>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYCYCLIC AROMATIC-HYDROCARBONS; ORGANOCHLORINE COMPOUNDS; POLYCHLORINATED-BIPHENYLS; WET DEPOSITION; ICE; PESTICIDES; TRANSPORT; CONGENERS; VAPORS; PHASE;
Keywords:
snow; deposition; PCB; PAH; HCH; remote lakes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Fernandez, P CSIC, Inst Chem & Environm Res, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Catalonia, Spain CSIC Jordi Girona 18-26 Barcelona Catalonia Spain 08034 Spain
Citazione:
G. Carrera et al., "Persistent organic pollutants in snow from European high mountain areas", ATMOS ENVIR, 35(2), 2001, pp. 245-254

Abstract

Snow cores were collected in the catchment area of five remote mountain lakes in Europe. They were analysed for polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB), and organochlorine pesticides, namely DDTs, hexachlorobenzene (HCB) and hexachlorocyclohexanes (HCH). PAH are found in higher amounts in the Tatra and Caledonian mountains, PCB are higher in the Alps and HCH are highest in the Alps and Pyrenees. The qualitative PAH distributions are dominated by low molecular weight compounds, phenanthrene being the most abundant PAH in all but in one site. These compounds alsooccur predominantly in the gas phase in the atmosphere. Their high abundance in the snowpack witness the occurrence of effective transfer mechanisms from gas to snow flakes. In Starolesnianske (Tatra mountains), a higher contribution of high molecular weight compounds is found. This site exhibits the highest snow PAH and suspended particulate levels. Transformation of theconcentration values of these compounds into annual deposition rates and correction for catchment/lake area indicates that in Scandinavia and the Alps a large proportion of PAH incorporation is mediated by snowfallout whereas in the Tatra mountains snow deposition only accounts for a small fractionof the compounds stored in the lake sediments. Among organochlorine compounds, only PCB and HCH have been found above method detection limit in most of the samples. The PCB congener distributions changes significantly between sites, although a predominance of the less chlorinated congeners have generally been observed. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 22:36:55