Title |
A chronicle of the changes undergone by a maritime territory, the Bay of Toulon (Var Coast, France), and their consequences on PCB contamination
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Published in |
SpringerPlus, August 2016
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DOI | 10.1186/s40064-016-2715-2 |
Pubmed ID | |
Authors |
Emmanuel Wafo, Lydia Abou, Alain Nicolay, Pierre Boissery, Thierry Perez, Rose Ngono Abondo, Cédric Garnier, Mama Chacha, Henri Portugal |
Abstract |
This study evaluated the distribution of polychlorinated biphenyls (PCBs) in 39 surface sediment samples and four cores collected in Toulon Bay, a semiclosed area submitted to various anthropogenic inputs. The concentration of PCBs in the superficial sediment samples ranged from 1.7 to 2530 ng g(-1) dry weight. The spatial distribution of these compounds suggested that the high concentrations of these contaminants are located in the small bay and are related to human activities. In the larger bay, the concentrations were in the same order of magnitude than those reported in others locations around the world. Comparison of the levels with target values from the French legislation shows that, except for four polluted sites with critical values (N2: values ≥1 mg kg(-1) dry weight) in the smaller bay, PCBs levels throughout the larger and the smaller bay are lower than the accepted values (N1: values <0.5 mg kg(-1) dry weight). The PCBs in the sediment cores ranged from 0.8 to 739 ng g(-1) dry weight dependent core. Vertical profiles indicated earlier usage of PCBs which coincided with the history of the Toulon Bay. In this study, using alkane, we could follow the PCBs pollution history over about 80 years and estimate a sedimentation rate of about 0.32 cm year in the small Bay of Toulon. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
France | 2 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 2 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 24 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 3 | 13% |
Researcher | 3 | 13% |
Professor > Associate Professor | 3 | 13% |
Student > Bachelor | 2 | 8% |
Student > Master | 1 | 4% |
Other | 2 | 8% |
Unknown | 10 | 42% |
Readers by discipline | Count | As % |
---|---|---|
Environmental Science | 5 | 21% |
Chemistry | 5 | 21% |
Neuroscience | 1 | 4% |
Earth and Planetary Sciences | 1 | 4% |
Unknown | 12 | 50% |