xmlui.ArtifactBrowser.SimpleSearch.filter.source:Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 19/2013
ISSN:1211-5541
Abstract:
The paper has been focused on the development of the former uranium mining site
located in Licoměřice. The orthogonal time-of-flight inductively coupled plasma
mass spectrometry was the method of the choice for the uranium determination in
water samples. The analytical procedure for the determination of uranium in
water using the oTOF-ICP-MS method was processed. The limit of detection for
uranium was 0.009 μg l–1. Sixty seven samples taken from former mining sites and
also from non-mining sites were analysed.
Emission limits for uranium were specified in the resolution of the State
office for nuclear safety, Prague No. 9156/4.3/00 agreed on 17th July 2000. The
recording level of uranium emission limits was exceeded in the case of ten water
samples, the controlling level of emission limits for five water samples,
and the emergency lever of emission limits for four water samples. The highest concentration of uranium has been found in the samples taken in the mining water
treatment area in Licoměřice. According to the Government resolution No.
23/2011, Appendix 3 (the indicators and values of permissible pollution of surface
water and wastewater, requisites of permit to discharge wastewater into surface
water and sewerage systems and about sensitive areas) the imission limit allowed
for the contamination with uranium in surface water is 40 μg l–1. This value has
been exceeded in four samples.
As the uranium concentration in the downstream flow has been found under
the imission limit and shown the lowering tendency during the mining water
treatment process, the recultivation and remedial measures taken by the state
owned company DIAMO in former mining site Licoměřice can be considered as
efficient.
