Spatial and Temporal Trends in Contamination of the Czech Part of the Elbe River by Mercury Between 1991 and 2016

Novotna, Kamila; Svobodová, Zdeňka; Haruštiaková, Danka; Mikula, Přemysl

doi:10.1007/s00128-020-03005-6

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…All of these measures can potentially lead to the decrease in THg concentrations detected in fish as well as other aquatic organisms. In fact, this was already proven in our previous study investigating spatial and temporal trends in contamination of the Czech part of Elbe River 30 . Overall long-term decline in THg concentrations of at least 20% during 1965–2012 was also observed in Swedish freshwater fish 36 .…”

Section: Discussionsupporting

confidence: 65%

“…The first one and one of the most important factors represent the environmental contamination. Generally higher THg concentrations can be expected in fish from areas with a high industrial load, in the proximity of big cities, especially downstream from possible sources of contamination 30 – 32 . From this viewpoint, low THg concentrations detected in fish from our study are not surprising, as all the 3 breeding ponds were located in countryside far from any industrial plants.…”

Section: Discussionmentioning

confidence: 99%

“…It follows that the values of the hazard index are far from 1 and therefore the consumption of fish from these ponds is safe. Novotna et al 30 set the values of the hazard index for fish from the river Elbe, which flows through the Czech Republic. Their hazard index results for fish from this locality are also below 1, therefore no negative impact on the health of people consuming fish from this river is expected.…”

Section: Discussionmentioning

confidence: 99%

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Do the total mercury concentrations detected in fish from Czech ponds represent a risk for consumers?

Sehonová

Haruštiaková

Mikula

et al. 2022

Sci Rep

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Mercury is one of the important pollutants of the environment. Therefore, it’s necessary to monitor quantity of mercury especially in aquatic ecosystems. The main goal of the presented study was to compare the content of total mercury in tissues of fish coming from the Czech Republic, an important carp exporter, with focus on comparison of mercury content between 3 different ponds, its comparison between different fish species and between different tissues of the same species, and estimation whether the mercury content in tissues meets the limit given in the Commission Regulation (EC) No. 1881/2006 or not. Total mercury concentration was measured in 90 fish specimen sampled from three ponds (Velky Kocelovicky, Mysliv and Zehunsky) in autumn 2018. The values of total mercury in fish tissues was measured by atomic absorption spectrometry. The content of total mercury in the tissues decreased as follows: muscle > liver > gonads > scales. The highest average content of total mercury in muscle was 0.1517 ± 0.0176 mg/kg coming from pike caught in Velky Kocelovicky pond. In contrast, the lowest average content of total mercury in muscle 0.0036 ± 0.0003 mg/kg was found in carp tissue coming from the locality of Zehunsky pond. We confirmed that the predatory fish are more exposed to mercury than non-predatory fish. None of the monitored localities exceeded the set regulatory limit. Thus, our study shows that fish coming from these ponds are safe in terms of total mercury content.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Do the total mercury concentrations detected in fish from Czech ponds represent a risk for consumers?

Sehonová

Haruštiaková

Mikula

et al. 2022

Sci Rep

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“…This is why fish are considered suitable bioindicators of contamination of the aquatic environment by mercury and other heavy metals (Wang and Wang 2019). The mercury content is highly variable in fish bodies, depending on many factors such as the fish species, its position in the food chain, contamination of the sampling site (Marsalek et al 2005;Novotna et al 2020;Novotna Kruzikova et al 2022) or the form of mercury. Total mercury (THg) content differs in individual tissues (Sehonova et al 2022) and the THg liver/muscle index can be used for the assessment of mercury contamination of the aquatic environment (Havelkova et al 2008;Kružíková et al 2013).…”

mentioning

confidence: 99%

Total mercury content in selected tissues of common carp (Cyprinus carpio) pond farmed in the Czech Republic

Novotná Kružíková,

Široká,

Svobodová

2023

Acta Vet. Brno

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The aim of this study was to evaluate the total mercury content in selected tissues (muscle, spleen, kidney, liver, scales, brain and gonads) of common carp (Cyprinus carpio). Thirty individuals of market carp caught in three ponds (Jaroslavicky, Strachotin, Vrkoc) located in the Morava River basin in the Czech Republic were used for this study. Total mercury was determined by atomic absorption spectrometry on AMA 254 device. The highest total mercury content was found in the muscle of carp (7.6 ± 2.8 µg·kg-1 in Jaroslavicky, 6.8 ± 2.3 µg·kg-1 in Vrkoc, and 12.9 ± 4.3 µg·kg-1 in Strachotin), followed by levels in caudal kidney, liver, spleen, and brain; the lowest mercury content was determined in gonads and scales. The comparison revealed that individual localities significantly differ in the mercury content in muscle, caudal kidney, liver and spleen samples. However, in all cases the values of the mercury content in muscle complied with the hygienic limit of up to 0.3 mg·kg-1, which means that mercury does not pose a risk to the consumers of these pond farmed fish and that the benefits of eating fish meat outweigh the potential risk in terms of mercury content.

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Atmospheric mercury and its deposition during the phasing out of an amalgam electrolysis plant: temporal, seasonal, and spatial patterns

Navrátil,

Rohovec,

Shanley

et al. 2023

Environ Sci Pollut Res

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Spatial and Temporal Trends in Contamination of the Czech Part of the Elbe River by Mercury Between 1991 and 2016

Cited by 3 publications

References 21 publications

Do the total mercury concentrations detected in fish from Czech ponds represent a risk for consumers?

Do the total mercury concentrations detected in fish from Czech ponds represent a risk for consumers?

Total mercury content in selected tissues of common carp (Cyprinus carpio) pond farmed in the Czech Republic

Atmospheric mercury and its deposition during the phasing out of an amalgam electrolysis plant: temporal, seasonal, and spatial patterns

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