Arsenic speciation and bioaccessibility in gold mining tailings, Cuba
Paper
Paper/Presentation Title | Arsenic speciation and bioaccessibility in gold mining tailings, Cuba |
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Presentation Type | Paper |
Authors | Guilherme, L. R. G. (Author), Toujaguez, R. (Author), Ono, F. B. (Author), Martins, V. (Author), Cabrera, P. P. (Author), Blanco, A. V. (Author) and Bundschuh, J. (Author) |
Editors | Ng, Jack C., Noller, Barry N., Naidu, Ravi, Bundschuh, Jochen and Bhattacharya, Prosun |
Journal or Proceedings Title | Proceedings of the 4th International Congress on Arsenic in the Environment (AS 2012) |
Number of Pages | 3 |
Year | 2012 |
Place of Publication | United States |
ISBN | 9780415637633 |
Digital Object Identifier (DOI) | https://doi.org/10.1201/b12522-173 |
Web Address (URL) of Paper | https://www.taylorfrancis.com/chapters/edit/10.1201/b12522-173/arsenic-speciation-bioaccessibility-gold-mining-tailings-cuba-guilherme-toujaguez-ono-martins-cabrera-blanco-bundschuh |
Web Address (URL) of Conference Proceedings | https://www.taylorfrancis.com/books/edit/10.1201/b12522/understanding-geological-medical-interface-arsenic-2012-ravi-naidu-jack-ng-jochen-bundschuh-barry-noller-prosun-bhattacharya |
Conference/Event | 4th International Congress on Arsenic in the Environment: Understanding the Geological and Medical Interface of Arsenic (AS 2012) |
Event Details | 4th International Congress on Arsenic in the Environment: Understanding the Geological and Medical Interface of Arsenic (AS 2012) Parent International Congress on Arsenic in the Environment (AS) Event Date 22 to end of 27 Jul 2012 Event Location Cairns, Australia |
Abstract | A previous risk assessment identified arsenic (As) as the main critical contaminant in a former gold mining area in Delita, Cuba. This study aimed at: i) evaluating As bioaccessibility in four tailings from a mining area; and, ii) identifying the mineral phases responsible for As bioaccessibility using XRD, SEM-EDS and XAS. The results showed that bioaccessible As in the tailings ranged from 0.65 to 40.5%. Although arsenopyrite, beudantite and other minerals were confirmed by petrography, XRD and SEM-EDS, XANES analyses indicated that scorodite phases and As5+ were dominant in most of the tailings. This confirms that the low As bioaccessibility in the most of piles is due to the slow kinetics of As release from scorodite. |
Keywords | arsenic bioaccessibility; gold mining; tailings; Cuba |
ANZSRC Field of Research 2020 | 370302. Inorganic geochemistry |
410406. Natural resource management | |
410404. Environmental management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Federal University of Lavras, Brazil |
Institute for Geophysics and Astonomy, Cuba | |
Karlsruhe University of Applied Sciences, Germany | |
University of Queensland | |
University of South Australia | |
National Centre for Engineering in Agriculture | |
KTH Royal Institute of Technology, Sweden | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1w56/arsenic-speciation-and-bioaccessibility-in-gold-mining-tailings-cuba
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