Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F14%3A00000109" target="_blank" >RIV/00025798:_____/14:00000109 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dust from selected African metal smelters: mineralogy, contaminant bioaccessibility and exposure estimations
Original language 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 (T
Czech name
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Czech description
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Project
<a href="/en/project/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Impact of ore mining and processing on the environment in Namibia: Modelling pollutants migration in soils, plants and groundwaters</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
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
ISBN
978-80-7075-858-8
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
37-41
Publisher name
Czech geological survey
Place of publication
Prague
Event location
Praha
Event date
May 26, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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