NDLI: Polycyclic aromatic hydrocarbons in clams <i>Ruditapes decussatus</i> (Linnaeus, 1758)

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Polycyclic aromatic hydrocarbons in clams Ruditapes decussatus (Linnaeus, 1758)

Content Provider	Royal Society of Chemistry (RSC)
Author	Barreira, Luísa A. Bebianno, Maria J. Mudge, Stephen M.
Copyright Year	2007
Abstract	The concentration of sixteen individual polycyclic aromatic hydrocarbons (PAHs) was measured in the clam Ruditapes decussatus whole soft tissues from several places of the Ria Formosa lagoon (Portugal). Total PAH (tPAH) concentrations were higher in the summer (August) and winter (January) than in the other months and the distribution pattern of the individual PAHs was generally dominated by the 4 aromatic ring PAHs, followed by the 2 + 3 aromatic rings PAHs. Benzo[a]anthracene and acenaphthene were the most representative PAHs of the two fractions. Principal components analysis (PCA) revealed that, in the Ria Formosa, seasonal variations are more important than spatial variations, due to changes in PAH source. These sources ranged from petrogenic to pyrolytic or a mixture of both. The origin of clam PAHs was also assessed by partial least squares (PLS) analysis using nineteen different PAH signatures, taken from the literature. It was possible to identify boat traffic, especially in the summer, as one of the most relevant PAH sources to the Ria Formosa. The influence of boat traffic was revealed by several signatures including diesel soot, oil and weathered oil and a mixture of different individual PAHs usually found in harbour sediments. Other relevant sources included combustion of organic matter such as forest fires and diverse domestic activities, occurring mainly in the summer. Most of the clams were considered safe for human consumption, except for some point samples, which presented unusually high PAH concentrations, suggesting the need for a regular survey of PAHs in clam tissues.
Starting Page	187
Ending Page	198
Page Count	12
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	9
Issue Number	2
Journal	Journal of Environmental Monitoring
DOI	10.1039/b614919g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	PCA Ria Formosa Portugal Polycyclic aromatic hydrocarbon Clam Decussation Anthracene Acenaphthene Principal component analysis Pyrolysis Soot Harbor
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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