Document Detail

Accumulation of polychlorinated biphenyls in sediments of the Venice Lagoon and the industrial area of Porto Marghera.
MedLine Citation:
PMID:  14659958     Owner:  NLM     Status:  MEDLINE    
Sediment cores, collected at seven sites in the Venice Lagoon and within the canals of the industrial area were analyzed for polychlorinated biphenyls (PCBs) in order to assess the chronology of pollution and its present trends. The surficial concentration of PCBs is very high (more than 2049 microg kg(-1)) only in the Brentella Canal, probably due to a very recent contaminating episode. Very high values downcore (up to 41,639 microg kg(-1)) can be found in different parts of the industrial area, especially in the canals Lusore-Brentelle and Salso. Lagoon samples are much less contaminated (2.7-123 microg kg(-1)), being influenced only occasionally by polluted sediments resuspended from the canals. Sediment chronology shows that the delivery of contaminants peaked in the 1970s-early 1980s, decreasing since at most sites. Congener profiles distinguish PCBs in two main categories: heavy congeners characterize a baseline pollution, probably due to a large variety of sources within the lagoon system, whereas a mixture of light PCBs was discharged into the canals Brentella and Salso.
M Frignani; L G Bellucci; C Carraro; M Favotto
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  54     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2003-12-08     Completed Date:  2004-03-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1563-72     Citation Subset:  IM    
ISMAR-Sezione di Geologia Marina, CNR, Via Gobetti 101, 40129 Bologna, Italy.
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MeSH Terms
Environmental Monitoring*
Geologic Sediments / analysis*
Polychlorinated Biphenyls / analysis*
Time Factors
Reg. No./Substance:
0/Polychlorinated Biphenyls

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