Watershed characteristics and climate factors effect on the temporal variability of mercury in the southern Baltic Sea rivers  

作　　者：Karolina Gebka Magdalena Beldowska Dominika Saniewska Karol Kuliński Jacek Beldowski 

机构地区：[1]The Institute of Oceanography, University of Gdansk, Marszalka Pilsudskiego Alley 46, 81-378 Gdynia, Poland [2]The Institute of Oceanology of The Polish Academy of Sciences, Powstaflc6w Warszawy Street 55, 81-712 Sopot, Poland

出　　处：《Journal of Environmental Sciences》2018年第6期55-64,共10页环境科学学报（英文版）

基　　金：performed within the framework of a National Science Centre project:No.2011/01/B/ST10/07697

摘　　要：Mercury（Hg） is a neurotoxic metal which can enter into the human organism mainly by fish consumption, skin and transpiration. In the coastal zone of the southern Baltic Sea, rivers are the main source of Hg. The Polish region represents the largest proportion of the Baltic Sea catchment and this research included four rivers of the Baltic watershed： the Reda,Zagórska Struga, Kacza and Gizdepka. The samples were collected in the years 2011–2013.Total and particulate Hg concentration in these rivers were measured. Due to intensive rain,deposited mercury on the catchment area was washed out into the riverines water and introduced into the Baltic Sea. Consequently, the load of Hg increased three times.Additionally, the intensive dry atmospheric deposition during heating season caused the increase of the concentration of particulate Hg in the river water even by 85%. The research confirmed the role of the river flow magnitude in the load of mercury introduced into the sea by rivers. Moreover, a high variability of mercury concentration was connected to the additional sources such as the chemicals containing Hg and no municipal sewage system.The analysis of stable isotopes indicated that the SPM contained terrestrial organic matter;however, there was no clear correlation between Hgtot, Corgand Ntotconcentrations and δ13C, δ15N, C/N in particulate matter.Mercury（Hg） is a neurotoxic metal which can enter into the human organism mainly by fish consumption, skin and transpiration. In the coastal zone of the southern Baltic Sea, rivers are the main source of Hg. The Polish region represents the largest proportion of the Baltic Sea catchment and this research included four rivers of the Baltic watershed： the Reda,Zagórska Struga, Kacza and Gizdepka. The samples were collected in the years 2011–2013.Total and particulate Hg concentration in these rivers were measured. Due to intensive rain,deposited mercury on the catchment area was washed out into the riverines water and introduced into the Baltic Sea. Consequently, the load of Hg increased three times.Additionally, the intensive dry atmospheric deposition during heating season caused the increase of the concentration of particulate Hg in the river water even by 85%. The research confirmed the role of the river flow magnitude in the load of mercury introduced into the sea by rivers. Moreover, a high variability of mercury concentration was connected to the additional sources such as the chemicals containing Hg and no municipal sewage system.The analysis of stable isotopes indicated that the SPM contained terrestrial organic matter;however, there was no clear correlation between Hgtot, Corgand Ntotconcentrations and δ13C, δ15N, C/N in particulate matter.

关 键 词：HG Suspended particulate matter Stable isotopes Atmospheric deposition RIVERS 

分 类 号：X831.02[环境科学与工程—环境工程] TN911.73[电子电信—通信与信息系统]