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Statements

Subject Item
n2:RIV%2F00025798%3A_____%2F14%3A00000097%21RIV15-GA0-00025798
rdf:type
skos:Concept n13:Vysledek
dcterms:description
Metal smelting is often responsible for local contamination of environmental compartments. Dust materials escaping from the smelting facilities not only settle in the soil, but can also have direct effects on populations living close to these operations (by ingestion or inhalation). In this particular study, we investigate dusts from Cu–Co metal smelters in the Zambian Copperbelt, using a combination of mineralogical techniques (XRD, SEM/EDS, and TEM/ EDS), in order to understand the solid speciation of the contaminants, as well as their bioaccessibility using in vitro tests in simulated gastric and lung fluids to assess the exposure risk for humans. The leaching of metals was mainly dependent on the contaminant mineralogy. Based on our results, a potential risk can be recognized, particularly from ingestion of the dust, with bioaccessible fractions ranging from 21 to 89 % of the total contaminant concentrations. In contrast, relatively low bioaccessible fractions were observed for simulated lung fluid extracts, with values ranging from 0.01 % (Pb) up to 16.5 % (Co) of total contaminant concentrations. Daily intakes via oral exposure, calculated for an adult (70 kg, ingestion rate 50 mg dust per day), slightly exceeded the tolerable daily intake limits for Co (1.669 for fly ash and 1.199 for slag dust) and occasionally also for Pb (1.499, fly ash) Electronic supplementary material The online version of and As (1.649, electrostatic precipitator dust). Cobalt has been suggested as the most important pollutant,and the direct pathways of the population’s exposures to dust particles in the industrial parts of the Zambian Copperbelt should be further studied in interdisciplinary investigations. Metal smelting is often responsible for local contamination of environmental compartments. Dust materials escaping from the smelting facilities not only settle in the soil, but can also have direct effects on populations living close to these operations (by ingestion or inhalation). In this particular study, we investigate dusts from Cu–Co metal smelters in the Zambian Copperbelt, using a combination of mineralogical techniques (XRD, SEM/EDS, and TEM/ EDS), in order to understand the solid speciation of the contaminants, as well as their bioaccessibility using in vitro tests in simulated gastric and lung fluids to assess the exposure risk for humans. The leaching of metals was mainly dependent on the contaminant mineralogy. Based on our results, a potential risk can be recognized, particularly from ingestion of the dust, with bioaccessible fractions ranging from 21 to 89 % of the total contaminant concentrations. In contrast, relatively low bioaccessible fractions were observed for simulated lung fluid extracts, with values ranging from 0.01 % (Pb) up to 16.5 % (Co) of total contaminant concentrations. Daily intakes via oral exposure, calculated for an adult (70 kg, ingestion rate 50 mg dust per day), slightly exceeded the tolerable daily intake limits for Co (1.669 for fly ash and 1.199 for slag dust) and occasionally also for Pb (1.499, fly ash) Electronic supplementary material The online version of and As (1.649, electrostatic precipitator dust). Cobalt has been suggested as the most important pollutant,and the direct pathways of the population’s exposures to dust particles in the industrial parts of the Zambian Copperbelt should be further studied in interdisciplinary investigations.
dcterms:title
Dust from Zambian smelters: mineralogy and contaminant bioacessibility Dust from Zambian smelters: mineralogy and contaminant bioacessibility
skos:prefLabel
Dust from Zambian smelters: mineralogy and contaminant bioacessibility Dust from Zambian smelters: mineralogy and contaminant bioacessibility
skos:notation
RIV/00025798:_____/14:00000097!RIV15-GA0-00025798
n3:aktivita
n6:P
n3:aktivity
P(GAP210/12/1413)
n3:cisloPeriodika
5
n3:dodaniDat
n5:2015
n3:domaciTvurceVysledku
n9:9365761 n9:1911686
n3:druhVysledku
n18:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
12526
n3:idVysledku
RIV/00025798:_____/14:00000097
n3:jazykVysledku
n16:eng
n3:klicovaSlova
dust, smelter, mineralogy, bioaccessibility, Zambia
n3:klicoveSlovo
n4:dust n4:smelter n4:bioaccessibility n4:mineralogy n4:Zambia
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[F27B45463406]
n3:nazevZdroje
Environmental Geochemistry and Health
n3:obor
n15:DD
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
8
n3:projekt
n14:GAP210%2F12%2F1413
n3:rokUplatneniVysledku
n5:2014
n3:svazekPeriodika
36
n3:tvurceVysledku
Klementová, Mariana Vybíral, Pavel Šebek, Ondřej Vítková, Martina Veselovský, František Mihaljevič, Martin Ettler, Vojtěch Kříbek, Bohdan
n3:wos
000342088900009
s:issn
0269-4042
s:numberOfPages
15
n17:doi
10.1007/s10653-014-9609-4