Radium isotopes in river sediments of Czech Republic

Hanslík, Eduard; Kalinová, Eva; Brtvová, M.; Ivanovová, Diana; Sedlářová, Barbora; Svobodová, Jitka; Jedináková-Křížová, V.; Rieder, Mark J.; Medek, Jiří; Forejt, Karel; Vondrák, Ladislav; Jahn, Karel; Jusko, Jiří

doi:10.1016/j.limno.2005.05.004

Cited by 13 publications

(2 citation statements)

References 5 publications

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“…The monitoring network of river bottom sediments covered the Czech Republic and included 44 river sites (hereinafter referred to as "basic network"). Based on the evaluation of the results in 2004 [5], the monitoring was extended by an additional 33 sites in 2006-2008 (hereinafter referred to as "extended network"), which cover the areas of former uranium and coal mining and processing. The sampling was carried out mainly by staff of CHMI and since 2006 the new sites were also sampled by staff of river basin companies and the T. G. Masaryk Water Research Institute (TGM WRI).…”

Section: Methodsmentioning

confidence: 99%

Natural and Artificial Radionuclides in River Bottom Sediments and Suspended Matter in the Czech Republic in the Period 2000-2010

Hanslík¹,

Marešová²,

Juranová³

2014

JEP

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The concentrations of natural radionuclides, radium-226, radium-228, and potassium-40, and the artificial radionuclide caesium-137, in river bottom sediments and suspended matter were monitored in the Czech Republic by the Czech Hydrometeorological Institute during the period 2000-2010 and 2001-2010 respectively. The data were used to evaluate the natural background levels of these radionuclides and the impact of human activities on the water environment. For potassium-40 in sediments, the natural background level was estimated to be 570 Bq/kg. To evaluate the background level for radium-226, the river sites affected by human activities (mining and processing uranium ore, coal) were eliminated from the assessment. The average natural background values were 47.8 Bq/kg for radium-226 and 47.2 Bq/kg for radium-228 in sediments and 86.5 Bq/kg for radium-226 and 87.9 Bq/kg for radium-228 in suspended matter. The river sediments were identified as good indicators of radioactive contamination, especially radium-226, which recorded historic contamination due to former uranium mining and milling. The radium-226 contamination rate was assessed using the ratio of radium-226 to radium-228. This ratio was used to classify sediment according to the relative contamination from the uranium industry. The residual contamination of caesium-137 due to the Chernobyl accident in 1986 was also assessed. Average values of caesium-137 were 14.0 Bq/kg in sediments and 25.0 Bq/kg in suspended matter.

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Section: Methodsmentioning

confidence: 99%

Natural and Artificial Radionuclides in River Bottom Sediments and Suspended Matter in the Czech Republic in the Period 2000-2010

Hanslík¹,

Marešová²,

Juranová³

2014

JEP

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“…The coefficient of variation calculated for these nuclides in our samples markedly exceeded the mentioned threshold (Table 4). Another way to confirm the impact of the tailing piles on the field is offered by Hanslik et al (2005). They introduced a method to evaluate the U contamination of sediments by mining and milling on the basis of the ( 226 Ra/ 228 Ra) ratio.…”

Section: Discussionmentioning

confidence: 99%