Long-term monitoring of dioxins in fish and sediments from the Elbe River basin

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020699%3A_____%2F25%3AN0000228" target="_blank" >RIV/00020699:_____/25:N0000228 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Long-term monitoring of dioxins in fish and sediments from the Elbe River basin

Original language description

Dioxins are persistent organic pollutants characterized by their high toxicity, hydrophobicity and ability to accumulate in biotic and abiotic environmental compartments, as well as in food chains. These compounds can be generated unintentionally during incomplete combustion processes in the presence of chlorine. After formation they tend to bind to small particles, which enables their long-range atmospheric transport. Once reached the aquatic ecosystem dioxins accumulate in lipid tissues of organisms and in sediments where they sorb to organic carbon. This study summarizes dioxin monitoring data in sediment and fish samples collected from the Elbe River and its major tributaries across the Czech Republic over the period 2015 to 2024. Results indicate different distribution patterns between matrices. In all fish samples the consistently predominant congener was PCB 126, while concentrations of individual compounds in sediments were more site-specific. Another difference is also in spatial trend, which was observed in fish, where dioxin levels increase along the downstream course of the Elbe River, whereas in sediments there is no clear dependence. Dioxin concentrations in sediments reached their long-term maximum at the Bílina River, with levels approximately an order of magnitude higher than those at other sites. In contrast, fish samples showed smaller concentration variability.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/SS02030027" target="_blank" >SS02030027: Water systems and water management in the Czech Republic in conditions of climate change</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Magdeburský seminář o ochraně vod 2025 - Hospodaření s vodou v povodí Labe včera, dnes a zítra

ISBN

978-3-910400-04-7

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

136-137

Publisher name

Mezinárodní komise pro ochranu Labe (MKOL)

Place of publication

Magdeburg

Event location

Magdeburg

Event date

Oct 8, 2025

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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