Saniewska Dominika, Bełdowska Magdalena, Bełdowski Jacek, Jędruch Agnieszka, Saniewski Michał, Falkowska Lucyna
Institute of Oceanography, University of Gdańsk, Av. Piłsudskiego 46, 81-378 Gdynia, Poland.
Institute of Oceanography, University of Gdańsk, Av. Piłsudskiego 46, 81-378 Gdynia, Poland.
Environ Pollut. 2014 Aug;191:93-100. doi: 10.1016/j.envpol.2014.04.003. Epub 2014 May 8.
Floods are an important factor determining riverine pollution loads, including toxic mercury (Hg). The impact of the Vistula River flood in 2010, which was the biggest one recorded in 160 years and its influence on marine environment was studied. Mercury concentration was analyzed in river and sea water, suspended matter, phytoplankton and sea surface sediment. Flood and gulf water contained several times higher concentration of Hg (exceeded reference values safe for aquatic organisms) than before or after the flood. In 2010 the Vistula introduced into the Baltic ca. 1576 kg of Hg, of which 75% can be attributed to the flood water. Increase of water temperature, decrease of oxygen content contended increasing of dissolved mercury concentration, which was transported far into the Baltic. This phenomenon led to an increase of Hg concentration in phytoplankton and during many months in surface sediments. It is a potential threat to marine organisms.
洪水是决定河流污染负荷的一个重要因素，其中包括有毒汞（Hg）。2010年维斯瓦河发生了160年来最大的洪水，并对其对海洋环境的影响进行了研究。对河水、海水、悬浮物、浮游植物和海面沉积物中的汞浓度进行了分析。洪水和海湾水体中的汞浓度比洪水前后高出数倍（超过了对水生生物安全的参考值）。2010年，维斯瓦河向波罗的海输入了约1576千克汞，其中75%可归因于洪水。水温升高、含氧量降低导致溶解汞浓度增加，并被输送到波罗的海更远处。这一现象导致浮游植物和表层沉积物中汞浓度在数月内上升。这对海洋生物构成了潜在威胁。
