Department of Physics and Chemistry, Széchenyi István University, Egyetem square 1, 9026, Győr, Hungary,
Environ Sci Pollut Res Int. 2013 Nov;20(11):7603-14. doi: 10.1007/s11356-013-2071-5. Epub 2013 Aug 23.
The aim of this study was to compare and assess the dissolved concentrations of trace elements (As, Zn, Hg, Cd, Cr, Ni, Pb and Cu) in surface water of Marcal River before and after the red mud spill that occurred in Ajka, western Hungary, in October 2010. The caustic sludge flooded the surrounding settlements and polluted the nearby Torna Creek, which flows through the Marcal and Raba rivers into the Danube. A total of 92 surface water samples were collected from the Marcal River in the period of 2007-2012 and analysed for dissolved trace metal(loid)s by atomic absorption spectroscopy method. After the spill, the water management authority initially focused on acid dosing of surface waters to lower pH and was effective in lowering both pH and metal(loid) concentrations. Among the dissolved trace metal(loid)s, arsenic and nickel levels were moderately higher in the Marcal River 2 years since the spill compared to that observed in the pre-disaster period. The concentrations of dissolved trace metal(loid)s did not exceed the European water quality standards and the US Environmental Protection Agency aquatic life criteria values (excluding one sample for cadmium).
本研究旨在比较和评估 2010 年 10 月匈牙利西部阿伊克发生红泥泄漏事件前后马尔卡勒河地表水微量元素（砷、锌、汞、镉、铬、镍、铅和铜）的溶解浓度。碱性污泥淹没了周边的定居点，并污染了附近的托纳河，该河穿过马尔卡勒河和拉巴河，流入多瑙河。在 2007 年至 2012 年期间，共从马尔卡勒河采集了 92 个地表水样本，并通过原子吸收光谱法分析了溶解微量元素。泄漏事件发生后，水管理当局最初专注于对地表水进行酸化处理以降低 pH 值，这一措施有效降低了 pH 值和金属（类）浓度。在溶解的微量元素中，与灾难前相比，泄漏事件发生后两年的马尔卡勒河中砷和镍的含量略高。溶解的微量元素浓度没有超过欧洲水质标准和美国环境保护署水生生物标准值（除一个镉样本外）。
