Record details

    Contamination of bottom sediments in the Nechranice water reservoir, Czech Republic
Statement of responsibility
    Tamara Spanilá, Ivana Sýkorová, Vladimír Šrein, Martin Šťastný, Jiří Bendl
Other titles
    Kontaminace dnových sedimentů ve vodní nádrži Nechranice
    Bendl, Jiří
    Spanilá, Tamara
    Sýkorová, Ivana, 1969-
    Šrein, Vladimír
    Šťastný, Martin
Source title - serial
    Acta montana. Series A, Geodynamics
    No. 17(119)
    s. 15-24
    1 obr., 11 fot., 6 tab., 11 bibl.
    České resumé
    Zkr. název ser.: Acta montana
Subject group
    chemismus hornin
    látky znečišťující
    metoda prášková
    nádrž vodní
    prvky stopové
    sedimentace fluviální
    sedimenty dna
Geographical name
    Nechranice (Chomutov)
Abstract (in english)
   The most serious contaminant of sediments at the Nechranice Water reservoir has been found to be As followed by U, Ag, Cd, Hg, Be, Pb and Zn. Increased concentration of these elements is probably connected to the history of mining in the region of Jáchymov which affected the sediments throughout the river basin as a whole while, to a certain degree, reflecting a generally higer content of uranium in the rocks creating the Bohemian Massif. At the same time, Pb, Zn and Cd are typical anthropogenous contaminants among which especially high values of Cd and Pb are alarming. The bottom sediments in the Nechranice Water Reservoir on the Ohře River deposited after 1968 are, in general, of relatively homogenous nature, however, with the recognisable influence of those brought in by the LuĹický Creek.
   Main portion of the sediment consist of kaolinite, illite, clastic K-feldspar and plagioclase and secondarily of chlorite, smectite, hornblende and gypsum while the share of organic lacustrine matter is low and atypical of paludal sediments
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    5. 8. 2008
Import date
    8. 8. 2012