扎波罗热水库浮游植物重金属含量分析

Yu. I. Nikolenko, E. Fedonenko
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引用次数: 3

摘要

目的:探讨扎波罗热水库不同部位浮游植物对重金属的分布和积累特征。材料和方法。2019年夏季,在扎波罗热水库水道沿线的5个地点采集了浮游植物样本。采用C115-M1原子吸收分光光度计测定样品中重金属的浓度,测定波长与所研究的每种金属的最大吸收相对应,并按标准方法测定。金属含量以mg/kg干重表示。采用“Microsoft Excel 2010”软件,按照普遍接受的方法对所得数据进行统计处理。结果。研究表明,Pb、Zn、Cu、Ni、Fe含量最高的浮游植物是莫克拉苏拉河的小溪;Monastyrsky岛的Mn含量最高,水库下部浮游植物中Cd含量最高。研究发现,浮游植物中铁和镁的生物富集因子在各研究点均表现为超高;镍、锌和铜的含量较高。在大多数采样点,铅和镉的生物浓度因子可以表征为中等;然而,在水库的下部,它们是高的。结论。扎波罗热水库不同部位浮游植物重金属含量差异显著。Zaporizhia水库的浮游植物能够积累重金属,特别是铁和镁,其积累量很大;这些元素的最高指标记录在萨马拉湾。浮游植物中重金属的绝对浓度与其累积量之间存在差异。它既与该地区的水文和水化学条件有关,也与浮游植物的定性和定量组成有关
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of the Content of Heavy Metals in Phytoplankton of the Zaporizhia Reservoir
The aim : to investigate the features of the distribution and accumulation of heavy metals by phytoplankton in different parts of the Zaporizhia reservoir. Materials and methods. Phytoplankton samples were collected in the summer of 2019 at 5 sites along the watercourse of the Zaporizhia reservoir. The concentration of heavy metals in the samples was determined using the C115-M1 atomic absorption spectrophotometer, at specific wavelengths corresponding to the maximum absorption of each of the studied metals in accordance with standard methods. The metal content was expressed in mg/kg dry weight. Statistical processing of the obtained data was carried out according to generally accepted methods using the “Microsoft Excel 2010” software. Results. Studies have revealed that the maximum content of Pb, Zn, Cu, Ni, Fe is recorded in the phytoplankton of the creek of the Mokra Sura river; the maximum content of Mn is revealed on the Monastyrsky island, and the content of Cd is the largest in phytoplankton of the lower part of the reservoir. It has been found that the bioconcentration factors of Iron and Magnesium in phytoplankton are characterized as ultrahigh at all the studied points; those of Nickel, Zinc and Copper are characterized as high. Lead and Cadmium bioconcentration factors can be characterized as moderate at most sampling points; however, they are high at the lower part of reservoir. Conclusions. The content of heavy metals in phytoplankton in different parts of the Zaporizhia reservoir differs significantly. Phytoplankton of the Zaporizhia reservoir is able to accumulate heavy metals, especially Iron and Magnesium, which are accumulated in large amounts; the maximum indicators of these elements are recorded in the Samara bay. There is a difference between absolute concentrations of heavy metals in phytoplankton and its accumulative capacity. It is related to both the hydrological and hydrochemical conditions of the area and the qualitative and quantitative composition of phytoplankton
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