Journal
ESTUARIES AND COASTS
Volume 34, Issue 6, Pages 1129-1139Publisher
SPRINGER
DOI: 10.1007/s12237-011-9389-3
Keywords
Spatial classification; Marine; Sediment; Polycyclic aromatic hydrocarbons
Funding
- Regional Government, Junta de Andalucia (Spain) [OT 2006/048, P06-FQM-02075]
- Obra Social la Caixa
- Ministry of Science and Innovation
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This paper reports a study of the occurrence and levels of polycyclic aromatic hydrocarbons (PAHs) in a bay characterised by a chronic persistent impact. A total of 55 sediment samples were taken at different depths up to 111 m in two sampling campaigns. Chemical analyses were carried out by gas chromatography-mass spectroscopy. The results indicate that: (1) significant spatial variations exist, (2) levels of PAHs are related more strongly to the spatial distribution of sediments than to mineralogy/granulometry, (3) the sediments are slightly-to-moderately contaminated by PAHs, and (4) these PAHs derive from pyrolytic and petrogenic sources. Through use of an innovative data classification system (proposed according to depth and spatial location of sampling points), and using factorial and cluster techniques, five zones have been differentiated depending on the contamination level and source.
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