scholarly journals Variation in the Content of Different Forms of Mercury in River Catchments of the Southern Baltic Sea – Case Study

2020 ◽  
Vol 72 (3) ◽  
pp. 63-72
Author(s):  
Karolina Gębka ◽  
Magdalena Bełdowska

Abstract Mercury (Hg) is recognised as a global environmental pollutant. Despite numerous studies being conducted around the world, the transformation of mercury in natural environments is still not fully understood. In addition, increasing droughts and heavy rains are currently observed to contribute to changes in the circulation of Hg. The purpose of this study was to recognise the influence of extreme meteorological and hydrological conditions on the inflow of various forms of mercury to the coastal zone of the Bay of Puck. The studies were carried out at estuarial stations of four rivers belonging to the southern Baltic Sea catchment: Reda, Zagorska Struga, Gizdepka and Płutnica. The results showed that meteorological and hydrological parameters affect mercury speciation in river catchments, which translates into inflow of labile mercury to the southern Baltic Sea.

2015 ◽  
Vol 99 ◽  
pp. 148-166 ◽  
Author(s):  
Wenyan Zhang ◽  
Ralf Schneider ◽  
Jakob Kolb ◽  
Tim Teichmann ◽  
Joanna Dudzinska-Nowak ◽  
...  

2020 ◽  
Vol 49 (2) ◽  
pp. 147-156
Author(s):  
Andrzej Reindl ◽  
Lucyna Falkowska ◽  
Agnieszka Grajewska

AbstractMuscles and livers of herring gulls (Larus argentatus) found in the coastal area of the southern Baltic Sea were tested for the presence of hexabromocyclododecane (HBCD) isomers. They were detected in the muscles (ΣHBCD = 42.82 ± 30.65 ng g−1 l.w.) and livers (ΣHBCD = 65.51±27.96 ng g−1 l.w.) of all examined gulls. The α-HBCD isomer dominates in all types of samples. Our study has shown that bodies of gulls are less contaminated with HBCD than bodies of aquatic birds from other regions of the world. There was no clear correlation between HBCD concentrations and sex and age of birds. Nevertheless, it was indicated that the highest concentrations of HBCD and the α-HBCD isomer were found in the livers of immature females (mean = 89.31 ± 21.63 ng g−1 l.w. and mean = 76.72±24.54 ng g−1 l.w., respectively). The highest liver sequestration rates of the α-HBCD isomer were found in both adult and immature males (mean = 7.7 ± 13.7 and mean = 6.2 ± 11.9, respectively).


Geomorphology ◽  
2019 ◽  
Vol 327 ◽  
pp. 365-376 ◽  
Author(s):  
Junjie Deng ◽  
Jiaxue Wu ◽  
Wenyan Zhang ◽  
Joanna Dudzinska-Nowak ◽  
Jan Harff

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