Dvorak Petr, Andreji Jaroslav, Faltová Leitmanová Ivana, Petrách Filip, Mraz Jan
University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture and Protection of waters, Czech Republic.
Department of Poultry Science and Small Animals Husbandry, Slovak University of Agriculture, Nitra, Slovakia.
Neuro Endocrinol Lett. 2018 Dec;39(5):380-384.
Biomonitoring of some slelected heavy metals in the Smeda river (Czech Republic) was carried out during 2015-2016 to assess the extent of environmental pollution. Attempts were also made to map the intensity of bioaccumulation in brown trout which was used as an indicator species. Monitoring of the environmental pollution of the Smeda river was carried in 2016.
Concentrations of some heavy metals i.e. Mercury (Hg), Lead (Pb), Cadmium (Cd) and Cobalt (Co) were quantified in the fish muscles. Correlations (Pearsons, 2-tailed) among selected metals with some morphometric parameters (standard length and total weight) in brown trout (Salmo trutta fario) were also examined.
Results showed a significant positive correlation between concentrations of Hg, Pb (group-I) and Pb, Cd (group-II) with the muscles and age of fishes (p<0.05). The groups of heavy metals i.e. group-I (Hg and Pb) and group-II (Pb and Cd) were purposively synthesized for better inference of the data since Pb formed significant (p<0.05) but distinct positive correlations with Hg and Cd. The contents of the analyzed metals in brown trout muscles were low Hg 0.06-0.5; Pb 0.01-0.3; Cd 0.01-0.04 and Co 0.01-0.03 mg.kg-1 wet weight basis and did not exceed the values of limits admissible in the Codex Alimentarius for safe human consumption except in the case of Hg which is little vulnerable to reach critical limit.
The contents of the analyzed metals in Brown trout muscles were lower at monitoring sites and did not exceed the values of limits admissible in the Czech Republic. Potential ecological risk analysis of toxic metals concentrations in sediments suggested only two sites (2 and 3) with elevated values that posed a midlle environmental risks. Strict periodical monitoring of Hg levels in the selected stretches of the River Smeda is recommended.
2015 - 2016年期间对斯梅达河（捷克共和国）中的一些选定重金属进行生物监测，以评估环境污染程度。还尝试绘制作为指示物种的褐鳟体内生物累积强度图。2016年对斯梅达河的环境污染进行了监测。
对鱼肌肉中的一些重金属，即汞（Hg）、铅（Pb）、镉（Cd）和钴（Co）的浓度进行了定量分析。还研究了选定金属与褐鳟（Salmo trutta fario）的一些形态测量参数（标准长度和总重量）之间的相关性（Pearson双尾检验）。
结果表明，Hg、Pb（第一组）以及Pb、Cd（第二组）的浓度与鱼的肌肉和年龄之间存在显著正相关（p<0.05）。特意合成了重金属组，即第一组（Hg和Pb）和第二组（Pb和Cd），以便更好地推断数据，因为Pb与Hg和Cd形成了显著（p<0.05）但不同的正相关。褐鳟肌肉中分析的金属含量以湿重计为：Hg 0.06 - 0.5；Pb 0.01 - 0.3；Cd 0.01 - 0.04和Co 0.01 - 0.03 mg·kg⁻¹，除Hg外，均未超过食品法典中人类安全消费允许的限值，Hg则几乎未达到临界限值。
监测点处褐鳟肌肉中分析的金属含量较低，未超过捷克共和国允许的限值。沉积物中有毒金属浓度的潜在生态风险分析表明，只有两个地点（2和3）的值升高，构成中等环境风险。建议对斯梅达河选定河段的Hg水平进行严格定期监测。
