Možnosti hodnocení zatížení říčních sedimentů stopovými prvky na příkladu řeky Svratky a jejích přítoků

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F21%3A00128640" target="_blank" >RIV/00216224:14310/21:00128640 - isvavai.cz</a>

Result on the web

<a href="https://app.geology.cz/img/zpravyvyzkum/fulltext/zpravy.geol.2022.02.pdf" target="_blank" >https://app.geology.cz/img/zpravyvyzkum/fulltext/zpravy.geol.2022.02.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3140/zpravy.geol.2021.13" target="_blank" >10.3140/zpravy.geol.2021.13</a>

Result language

angličtina

Original language name

Možnosti hodnocení zatížení říčních sedimentů stopovými prvky na příkladu řeky Svratky a jejích přítoků

Original language description

Most methods of evaluating river system contamination use an enrichment factor, but there is no consensus concerning the specific values of the natural geochemical background to be. This is critical for evaluation of the anthropogenic loading. Taking into account that the final evaluation is strongly dependent on the choice of this parameter, the aim of the paper is to show the importance of the choice of the natural background in assessing the pollution degree of river sediments. Element concentrations of the surrounding rocks are considered to be the natural geochemical background. The Svratka River springs in the Žárské vrchy Highlands. It flows through crystalline rocks in upstream, and further then through metamorphic volcanic rocks, sediments of the Boskovice furrow and plutonic rocks of the Brno Massif. Further on, it flows through a straight watercourse over the plain of the Dyje-Svratka deep valley, and the downstream flows through Miocene sediments of the Carpathian foredeep and flysch units of the Western Carpathians (Fig. 1). 24 samples of river sediments were taken from the Svratka River and its tributaries (Fig. 1). The samples were decomposed in a solution of 1 ml HF (40%) and 3 ml HNO3 (65%). The Al, Ti and As contents were determined by AAS, the Pb, Zr contents were determined by FAAS, and Cr and Ni element contents were determined by ICP-MS (Table 2). The Enrichment Factor (EF) was calculated for each sample using Al, Ti and Zr as reference elements and recommended concentration of the natural background values in Table 1. The resulting EF values are very different (Fig. 2a, b). The results of the statistical processing for lead, arsenic, nickel and chromium (Fig. 3a–d) using the reference elements titanium, aluminium and zirconium demonstrated that the choice of the reference element is not the main factor that significantly influences the final evaluation. The choice of the appropriate natural geochemical background value is absolutely crucial for the evaluation of the anthropogenic loading.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10505 - Geology

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

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

Name of the periodical

Geoscience Research Reports

ISSN

2336-5757

e-ISSN

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Volume of the periodical

54

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

6

Pages from-to

117-122

UT code for WoS article

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EID of the result in the Scopus database

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