Acta Facultatis Ecologiae - Technická univerzita vo Zvolene

99Vlčia Dolina and from the reservoir of WW Dobšinácontained in the Tab. 3 shows a high extent ofexceeding of all limit values of the contaminationof sediments with elements of Ni, Sb, Cr and As inthe individual localities.Tab. 4 contains the results of the chemicalanalysis of samples of sediment load taken in Julyfrom 11 localities.Localities of sampling of sediment load no. 1,2 and 3 although being located in the basin of theSlaná River are directly influenced by the basinof the River Hnilec due to the pressure water supplyfrom the water reservoir of WW PalcmanskáMaša to the water reservoir of WW Vlčia Dolina.Out of 10 assessed elements for which limit valuesexist 6 elements, namely Zn, Cu, Pb, Cr, AsTab. 4 Results of the chemical analysis of sediment load samples out of Slaná river and in Slaná river basin, from VlčiaDolina – brook to village Bretka, (sampling – July 2006) and comparison with the Methodical Instruction of MESR No. 549/1998-2No. ofsample LOCALITY Zn Cu Mn Co Ni Pb Sb Cd Cr As Hg[mg . kg –1 ]1Vlčia Dolina– brook129.0 < 10 1 100 65.8 95.7 13.9 15.3 3.34 81.2 12.9 0.332WW Vlčia Dolina– dam194.2 < 10 2 900 66.0 107.1 55.0 9.5 2.84 104.2 31.3 0.283Water Reservoir– in Dobšiná197.1 < 53 1 500 62.5 139.9 57.7 14.4 2.40 105.8 21.2 0..65Slaná river– over Dobšiná brook73.7 < 10 400 11.1 44.4 23.4 8.7 0.91 86.7 6.5 0.096Slaná river– under Dobšiná brook81.4 < 10 700 14.6 65.9 24.4 13.6 1.22 90.9 11.8 0.167Sludge basin, NižnáSlaná – left toe drain41.8 < 10 6 600 7.9 326.7 11.6 1200 1.02 20.9 19 500 4.219Slaná river,– under Nižná Slaná94.3 < 10 1 500 16.3 79.0 10.1 22.7 1.43 83.9 17.8 0.2012Slaná river– over Bretka66.6 < 10 700 10.1 29.3 23.0 1.5 0.52 48.9 3.3 0.1914Muráň brook, estuaryto reservoir in Lubeník102.3 < 10 900 14.9 36.5 46.5 5.5 0.87 55.0 3.4 –15Muráň brook, overjunction with Slaná 112.5 < 10 1 300 14.5 49.8 26.1 30.6 0.54 86.4 40.9 0..2river16Slaná river– in Bretka91.3 < 10 800 13.6 41.5 25.6 5.5 0.87 59.3 4.1 –MI ME SRNo. 549/ 1998 –2TV 140 36 – 9 35 85 3 0.8 100 29 0.3MPC 620 73 – 19 44 530 15 12 380 55 10IV 720 190 – – 210 530 – 12 380 55 10TV – Testing value; MPC – Maximum permissible concentration; IV – Interventional value;Annotation: The samples from localities no. 4, 8, 10, 11 and 13 were not picked-upand Hg, show lower concentrations or concentrationsvery close to the TV limit in those 3 localities.4 elements, namely Co, Ni, Sb and Cd, show concentrationsreaching or exceeding the limit value ofMPC, however, being deep under the IV.Sample of sediment load no. 7 from the localityof the sludge basin of Nižná Slaná from the left toedrain shows the concentration of Ni being higherthan the IV. The content of Sb in this locality exceedsthe maximum limit value of concentration 80