Journal
MARINE POLLUTION BULLETIN
Volume 70, Issue 1-2, Pages 219-226Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2013.03.008
Keywords
Nibs; Plastic pellets; Plastic pollution; Polycyclic aromatic hydrocarbons (PAHs); Beach sediment
Funding
- Coordination for Enhancement of Higher Education (CAPES)
- National Council for Scientific and Technological Research (CNPq) [Proc. 301240/2006-0]
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Plastic pellets have the ability to adsorb organic pollutants such as PAHs. This study analyzed the variability in the concentration and composition of PAHs on plastic pellets sampled up to 1 m deep in the sediment of a sandy beach. The toxic potential of PAHs was analyzed, and the possible sources of contamination are discussed. The total PAHs varied, with the highest concentrations in the surface layer; the priority PAHs showed a different pattern. PAHs at greater depths did not reach toxicity levels above the PEL. The composition of PAHs differed between pellets from the shallower and from deeper sediment layers, and was suggested a mixture of sources. These results provided the first information on the depth distribution of PAHs in sandy beaches, associated with plastic pellets; and evidenced the potential environmental risk. Similarly to the abundance of pellets, the toxic potential is underestimated in surface samples. (C) 2013 Elsevier Ltd. All rights reserved.
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