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Statements

Subject Item
n2:RIV%2F00025798%3A_____%2F14%3A00000100%21RIV15-GA0-00025798
rdf:type
n3:Vysledek skos:Concept
dcterms:description
The dust blown out from the tailings dam appears to be the major environmental threat in the Rosh Pinah town. The degree of regional industrial pollution of topsoil can be best evaluated using the Coefficient of Industrial Pollution (CIP) based on actual and median concentrations of the given contaminants. The bioaccessibility of metals and arsenic in topsoils was tested by a US EPA-adopted in vitro method using a simulating gastric fluid formed of a 0.4Msolution of glycine adjusted to pH 1.5 by HCl addition. Gastric accessible contents of chemical elements in topsoil increase (in % of their total contents in topsoil) in the ascending sequence: Fe (6.2%) → As (8.6%) → Cu (23.6%) → Zn (39.3%) → Mn (66.7%) → Pb (85.9%). The evaluation of obtained data on gastric bioaccessibility indicates that a health risk related to soil or dust ingestion should be taken into account only in the case of lead. Dispersion modeling of suspended dust particles (TSP) in the air at Rosh Pinah revealed that while the whole surface of the tailings dam was dry in the past due to infiltration and evaporation of water, the average yearly concentrations of TPS in the Rosh Pinah town amounted to 100–300 μg m−3, but when two thirds of tailings dam surface has currently been covered with water, the concentrations of TPS markedly decreased to 30–100 μg m−3. The results of dispersion modeling fit well with the results of ground geochemical survey. The dust blown out from the tailings dam appears to be the major environmental threat in the Rosh Pinah town. The degree of regional industrial pollution of topsoil can be best evaluated using the Coefficient of Industrial Pollution (CIP) based on actual and median concentrations of the given contaminants. The bioaccessibility of metals and arsenic in topsoils was tested by a US EPA-adopted in vitro method using a simulating gastric fluid formed of a 0.4Msolution of glycine adjusted to pH 1.5 by HCl addition. Gastric accessible contents of chemical elements in topsoil increase (in % of their total contents in topsoil) in the ascending sequence: Fe (6.2%) → As (8.6%) → Cu (23.6%) → Zn (39.3%) → Mn (66.7%) → Pb (85.9%). The evaluation of obtained data on gastric bioaccessibility indicates that a health risk related to soil or dust ingestion should be taken into account only in the case of lead. Dispersion modeling of suspended dust particles (TSP) in the air at Rosh Pinah revealed that while the whole surface of the tailings dam was dry in the past due to infiltration and evaporation of water, the average yearly concentrations of TPS in the Rosh Pinah town amounted to 100–300 μg m−3, but when two thirds of tailings dam surface has currently been covered with water, the concentrations of TPS markedly decreased to 30–100 μg m−3. The results of dispersion modeling fit well with the results of ground geochemical survey.
dcterms:title
Contamination of soils with dust fallout from the tailings dam at the Rosh Pinah area, Namibia: Regional assessment, dust dispersion modeling and environmental consequences Contamination of soils with dust fallout from the tailings dam at the Rosh Pinah area, Namibia: Regional assessment, dust dispersion modeling and environmental consequences
skos:prefLabel
Contamination of soils with dust fallout from the tailings dam at the Rosh Pinah area, Namibia: Regional assessment, dust dispersion modeling and environmental consequences Contamination of soils with dust fallout from the tailings dam at the Rosh Pinah area, Namibia: Regional assessment, dust dispersion modeling and environmental consequences
skos:notation
RIV/00025798:_____/14:00000100!RIV15-GA0-00025798
n4:aktivita
n5:P n5:I
n4:aktivity
I, P(GAP210/12/1413)
n4:dodaniDat
n10:2015
n4:domaciTvurceVysledku
n7:2223139 n7:9365761 n7:7303203
n4:druhVysledku
n13:D
n4:duvernostUdaju
n17:S
n4:entitaPredkladatele
n18:predkladatel
n4:idSjednocenehoVysledku
8751
n4:idVysledku
RIV/00025798:_____/14:00000100
n4:jazykVysledku
n8:eng
n4:klicovaSlova
Metals, soil pollution, environment, Rosh Pinah, Namibia, tailings, gastric accessibility, dispersion modelling
n4:klicoveSlovo
n9:Metals n9:gastric%20accessibility n9:environment n9:tailings n9:dispersion%20modelling n9:Namibia n9:Rosh%20Pinah n9:soil%20pollution
n4:kontrolniKodProRIV
[036E43CC4D26]
n4:mistoKonaniAkce
Praha
n4:mistoVydani
Prague
n4:nazevZdroje
Addressing environmental and health impacts of active and abandoned mines in Sub-Saharan Africa. Proceedings of the Closing Workshop of the IGCP/SIDA Projects 594 and 606,Prague, Czech Republic, May 26—28, 2014
n4:obor
n6:DD
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
7
n4:projekt
n19:GAP210%2F12%2F1413
n4:rokUplatneniVysledku
n10:2014
n4:tvurceVysledku
Kříbek, Bohdan Mapani, Benjamin Pašava, Jan Majer, Vladimír Ettler, Vojtěch Kamona, Frederick Keder, Josef
n4:typAkce
n16:WRD
n4:zahajeniAkce
2014-05-26+02:00
s:numberOfPages
5
n12:hasPublisher
Czech geological survey
n20:isbn
978-80-7075-858-8