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| rdf:type
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| Description
| - We investigated dusts from metal smelters in the Zambian Copperbelt and northern Nambia, using a combination of mineralogical techniques (XRD, SEM/EDS, 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 5 to 89% of the total contaminant concentrations. In contrast, relatively low bioaccessible fractions were observed for simulated lung fluid extracts (carried out only on Zambian dusts), 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 (TDI) limits for Co (1.7× and 1.2× for fly ash slag dust from Zambian Copperbelt, respectively) and also for Pb (2.3×) and As (187×, bag house dust from Tsumeb, Namibia).
- We investigated dusts from metal smelters in the Zambian Copperbelt and northern Nambia, using a combination of mineralogical techniques (XRD, SEM/EDS, 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 5 to 89% of the total contaminant concentrations. In contrast, relatively low bioaccessible fractions were observed for simulated lung fluid extracts (carried out only on Zambian dusts), 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 (TDI) limits for Co (1.7× and 1.2× for fly ash slag dust from Zambian Copperbelt, respectively) and also for Pb (2.3×) and As (187×, bag house dust from Tsumeb, Namibia). (en)
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| Title
| - Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations
- Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations (en)
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| skos:prefLabel
| - Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations
- Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations (en)
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| skos:notation
| - RIV/00025798:_____/14:00000109!RIV15-GA0-00025798
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00025798:_____/14:00000109
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Dust, smelters, metals, bioaccessibility, Zambia, Namibia (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/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
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kříbek, Bohdan
- Majer, Vladimír
- Mihaljevič, Martin
- Penížek, Vít
- Veselovský, František
- Šráček, Ondřej
- Ettler, Vojtěch
- Vaněk, Aleš
- Vítková, Martina
- Šebek, Ondřej
- Mapani, Benjamin
- Nyambe, Imasiku
- Kamona, Frederick
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
| |
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