Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/11172
Title: | Mercury partition in the interface between a contaminated lagoon and the ocean: the role of particulate load and composition |
Author: | Pato, P. Otero, M. Valega, M. Lopes, C. B. Pereira, M. E. Duarte, A. C. |
Keywords: | Mercury distribution Resuspension Particulate organic carbon Suspended particulate matter Tidal cycles |
Issue Date: | 2010 |
Publisher: | Elsevier |
Abstract: | After having estimated the patterns of flow to the ocean and found some seasonal and tidal differences, mainly with regard to the relative importance of dissolved and particulate fractions, mercury partitioning at the interface between a contaminated lagoon and the Atlantic Ocean was investigated during four tidal cycles in contrasting season and tidal regimes. Mercury was found to be located predominantely in the particulate fraction throughout the year, contributing to its retention within the system. Seasonal conditions, variations in marine and fluvial signals and processes affecting bed sediment resuspension influenced the character and concentration of suspended particulate matter in the water column. Variation in the nature, levels and partitioning of organic carbon in the particulate fraction affected levels of particulate mercury as well as mercury partitioning. These results highlight the dominant role of suspended particulate matter in the distribution of anthropogenic mercury and reinforce the importance of competitive behavior related to organic carbon in mercury scavenging. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/11172 |
DOI: | 10.1016/j.marpolbul.2010.07.004 |
ISSN: | 0025-326X |
Appears in Collections: | CESAM - Artigos DBio - Artigos PT Mar - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Mercury partition in the interface between a contaminated lagoon.pdf | 674.21 kB | Adobe PDF |
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