Mercury in suspended matter of the Gulf of Gdańsk: Origin, distribution and transport at the land-sea interface

Last modified: 
December 13, 2019 - 9:18pm
Type: Journal Article
Year of publication: 2017
Date published: 05/2017
Authors: Agnieszka Jędruch, Urszula Kwasigroch, Magdalena Bełdowska, Karol Kuliński
Journal title: Marine Pollution Bulletin
Volume: 118
Issue: 1-2
Pages: 354 - 367
ISSN: 0025326X

The coastal regions of inland seas are particularly vulnerable to Hg pollution. An important carrier of toxic Hg in the marine environment is suspended matter originating from multiple sources. The present study was conducted in the Gulf of Gdańsk and its adjoining land in the years 2011–2013. The results indicated that the HgSPM (Hg bound with suspended particulate matter) concentrations varied horizontally and vertically and were dependent on the water dynamics and the composition of organic matter. Conditions favourable for the accumulation of matter and adsorption of reactive gaseous mercury led to increasing HgSPM levels, which are especially hazardous in the case of semi-enclosed areas such as estuaries. These conditions also increase the Hg loads into the trophic chain through suspension feeders. Moreover, the HgSPM concentration was significantly affected by seasonal phenomena (mainly coastal erosion) and the quantity and quality of primary production (phytoplankton blooms, mainly Mesodinium rubrum).

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