Document Detail


Source identification of polycyclic aromatic hydrocarbons in Lake Bled (NW Slovenia) sediments using stable carbon isotopes.
MedLine Citation:
PMID:  23286333     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A combination of molecular and stable isotope analyses was used to trace and identify the sources of polycyclic aromatic hydrocarbons (PAH) in sediments of Lake Bled (NW Slovenia). Sediment samples were taken from two locations with contrasting depositional regimes: Zaka Bay, with permanently oxic bottom and station D, where anoxic conditions prevail throughout the year. The concentrations of PAH in surface sediments at the two locations were comparable and higher than in previous studies, reaching 4,230 and 4,380 ng g 1, respectively. It was found that Reten (Re) and Perylene (Per) are both mainly of natural origin in Zaka Bay while, at station D, the value of 13C determined at a depth of 12-14 cm in the 1950s indicated that Re was of pyrolytic origin. The distribution of 13C values of other individual PAH showed that PAH input to lake sediments was of pyrolytic origin, likely dominated by coal and later in 1950s also by wood burning. PAH from vehicular emissions could also contribute to the overall isotope signatures at the depth of 12-14 cm at station D and Zaka Bay corresponding to the period 1953-1961.
Authors:
Marinka Gams Petrisic; Gregor Muri; Nives Ogrinc
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-3
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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