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Contamination of bottom sediments by lead, zinc and cadmium in Rzeszow reservoir

机译：热舒夫水库中铅，锌和镉对底部沉积物的污染

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The aim of the present study was to determine the level of contamination of the bottom sediments in the Rzeszow reservoir by the selected heavy metals Pb, Cd and Zn, and to identify the potential environmental risks of heavy metals content basing on available assessments and classification of bottom sediments. The Rzeszow reservoir is situated on the Wis?ok River in the Podkarpackie Voivodeship, southeaster Poland, was constructed on 1974. Nowadays, as a result of silting, the reservoir reduced its surface and depth, which does not have a positive effect on the assumed functions it is to perform. The study was conducted in 2016. The samples of sediment were collected in five locations. Samples were taken twice: in June and in October. The following concentrations have been determined: cadmium - 0.01 ÷ 0.92 mg?kg–1, zinc - 54.39 ÷ 128 mg?kg–1, lead - 2.98 ÷ 25.42 mg?kg–1. The decline trend in the sediment is following: Zn Pb Cd. For the assessment of sediment contamination, following methods: aquatic sediment quality classification used by the Polish Geological Institute - I class, Regulation of the Minister of Environment of April 16 2002 on the types and concentrations of substances contaminating the excavated material – unpolluted and LAW sediment classification – Pb - I/I-II, Cd - I/I-II/II and Zn - I/I-II. The obtained results were compared with the results obtained by the other authors in earlier years, which led to the estimated changes in the concentration of the tested metals.
机译：本研究的目的是确定所选择的重金属Pb，Cd和Zn对热舒夫水库底部沉积物的污染程度，并根据可得的评估和分类来确定重金属含量的潜在环境风险。底部沉积物。热舒夫水库位于波兰东南部的Podkarpackie Voivodeship的维索克河上，始建于1974年。如今，由于淤积，水库的表面和深度减小了，这对假定的水库没有产生积极的影响。它要执行的功能。该研究于2016年进行。沉积物样品在五个地点收集。两次采样：六月和十月。确定了以下浓度：镉-0.01÷0.92 mg？kg-1，锌-54.39÷128 mg？kg-1，铅-2.98÷25.42 mg？kg-1。沉积物的下降趋势如下：Zn> Pb> Cd。为了评估沉积物污染，可采用以下方法：波兰地质研究所使用的水生沉积物质量分类-I级，环境部长关于2002年4月16日关于污染被挖掘物质的类型和浓度的法规-未污染和法律沉积分类-Pb-I / I-II，Cd-I / I-II / II和Zn-I / I-II。将获得的结果与其他作者在较早几年中获得的结果进行比较，从而得出了被测金属浓度的估计变化。

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