naa a22 4500 510749348 CHVBK 20180411083058.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11270-013-1542-0 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1542-0 Submarine Groundwater Discharge as a Source of Mercury in the Bay of Puck, the Southern Baltic Sea [Elektronische Daten] [Beata Szymczycha, Michał Miotk, Janusz Pempkowiak] Both groundwater flow and mercury concentrations in pore water and seawater were quantified in the groundwater seeping site of the Bay of Puck, southern Baltic Sea. Total dissolved mercury (HgTD) in pore water ranged from 0.51 to 4.90ngl−1. Seawater samples were characterized by elevated HgTD concentrations, ranging from 4.41 to 6.37ngl−1, while HgTD concentrations in groundwater samples ranged from 0.51 to 1.15ngl−1. High HgTD concentrations in pore water of the uppermost sediment layers were attributed to seawater intrusion into the sediment. The relationship between HgTD concentrations and salinity of pore water was non-conservative, indicating removal of dissolved mercury upon mixing seawater with groundwater. The mechanism of dissolved mercury removal was further elucidated by examining its relationships with both dissolved organic matter, dissolved manganese (Mn II), and redox potential. The flux of HgTD to the Bay of Puck was estimated to be 18.9 ± 6.3gyear−1. The submarine groundwater discharge-derived mercury load is substantially smaller than atmospheric deposition and riverine discharge to the Bay of Puck. Thus, groundwater is a factor that dilutes the mercury concentrations in pore water and, as a result, dilutes the mercury concentrations in the water column. The Author(s), 2013 Gulf of Gdańsk nationallicence Loads nationallicence Mercury nationallicence Submarine groundwater discharge nationallicence Seepage water nationallicence Szymczycha Beata Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut Miotk Michał Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut Pempkowiak Janusz Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-14 0049-6979 224:6<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1542-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1542-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Szymczycha Beata Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut NATIONALLICENCE 700 1- Miotk Michał Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut NATIONALLICENCE 700 1- Pempkowiak Janusz Institute of Oceanology, Polish Academy of Sciences, ul. Powstancow Warszawy 55, 81712, Sopot, Poland aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-14 0049-6979 224:6<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer