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Title: Monitoring polycyclic aromatic hydrocarbons in the Northeast Aegean Sea using Posidonia oceanica seagrass and synthetic passive samplers
Authors: Apostolopoulou, M.-V. 
Monteyne, E. 
Krikonis, K. 
Pavlopoulos, K. 
Roose, P. 
Dehairs, F. 
Issue Date: Oct-2014
Publisher: Elsevier Ltd
Journal: Marine Pollution Bulletin 
Abstract: The concentrations of 22 polyaromatic hydrocarbons (PAH) in Posidonia oceanica seagrass, sediments, and seawater from the Alexandroupolis Gulf in the Aegean Sea, were investigated from 2007 to 2011. Temporal trends of total PAH contents in P. oceanica and sediments were similar. PAH levels in seawater, sediments, and seagrasses generally decreased with increasing distance from Alexandroupolis Port. Leaves and sheaths of P. oceanica had higher PAH levels than roots and rhizomes. P. oceanica accumulates PAHs and has good potential as a bioindicator of spatiotemporal pollution trends. PAH concentrations were also examined using in situ passive seawater sampling and were compared to results of passive sampling in the laboratory using local sediments and seawater. Levels of high molecular weight PAHs assessed using passive samplers confirmed the decreasing gradient of pollution away from Alexandroupolis Port. Passive sampling also proved useful for investigating sources of PAHs in P. oceanica meadows. © 2014 Elsevier Ltd.
ISSN: 0025-326X
DOI: 10.1016/j.marpolbul.2014.07.051
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