Mercury deposition histories have been scarcely documented in the southern hemisphere. A sediment core was collected from the ecologically important estuarine floodplain of the Berg River (South Africa). The authors establish the concentration of Hg in this 210Pb-dated sediment core at <50 ng g_1 HgT throughout the core, but with 1.3 ng g_1 methylmercury in surface sediments. The 210Pb dating of the core provides a first record of mercury deposition to the site and reveals the onset of enhanced mercury deposition in 1970. The ratio of methylmercury to total mercury is relatively high in these sediments when compared to other wetlands
Reference:
Kading, TJ, Mason, RP and Leaner, JJ. Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa). Marine Pollution Bulletin, Vol. 59(4-7), pp 116-122
Kading, T., Mason, R., & Leaner, J. (2009). Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa). http://hdl.handle.net/10204/4183
Kading, TJ, RP Mason, and JJ Leaner "Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa)." (2009) http://hdl.handle.net/10204/4183
Kading T, Mason R, Leaner J. Mercury contamination history of an estuarine floodplain reconstructed from a 210Pb-dated sediment core (Berg River, South Africa). 2009; http://hdl.handle.net/10204/4183.
Copyright: 2009 Elsevier. This is the post-print version of the work. The definitive version is published on the Marine Pollution Bulletin, Vol.59(4-7), pp 116-122
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