Arsenic enrichment in sediments and beaches of Brazilian coastal waters: a review

Baeyens, Wiley and Mirlean, Nicolai and Bundschuh, Jochen and de Winter, Niels and Baisch, Paulo and Rodrigues da Silva Junior, Flavio Manoel and Gao, Yue (2019) Arsenic enrichment in sediments and beaches of Brazilian coastal waters: a review. Science of the Total Environment, 681. pp. 143-154. ISSN 0048-9697


Abstract

High concentrations of total arsenic (As), even above the Brazilian legislative threshold for marine sediments of 70 mg kg−1, were found in beach sands and near-shore surface sediments. Two mechanisms (anthropogenic activities and sedimentary processes in the coastal waters) are responsible for this contamination. The anthropogenic impact includes releases from metallurgical plants, phosphate fertilizer plants and gold and iron mining. In the coastal area sedimentary processes redistributed the As from the sediment into the porous structure of calcareous marine algae. These enriched calcareous algae are transported over time to the beach by wave action. As in the Brazilian coastal environment, increased As levels were also observed in other coastal environments of South America such as Rio Loa (Chile), Barbacoas Bay (Colombia) and the Southern Pampa region (Argentina). Finally, arsenic levels in fish from Brazilian coastal waters and North Sea, which is also an As-contaminated area, were compared. In both areas, short term health effects from fish consumption are not expected, but a lifetime cancer risk cannot be excluded.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 20 Feb 2020 01:43
Last Modified: 24 Feb 2020 01:58
Uncontrolled Keywords: arsenic, sources, enrichment mechanism, coastal environment, Latin America
Fields of Research (2008): 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
05 Environmental Sciences > 0502 Environmental Science and Management > 050205 Environmental Management
05 Environmental Sciences > 0502 Environmental Science and Management > 050206 Environmental Monitoring
Fields of Research (2020): 41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410402 Environmental assessment and monitoring
41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410404 Environmental management
41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410404 Environmental management
Socio-Economic Objectives (2008): C Society > 92 Health > 9204 Public Health (excl. Specific Population Health) > 920499 Public Health (excl. Specific Population Health) not elsewhere classified
D Environment > 96 Environment > 9609 Land and Water Management > 960903 Coastal and Estuarine Water Management
Identification Number or DOI: https://doi.org/10.1016/j.scitotenv.2019.05.126
URI: http://eprints.usq.edu.au/id/eprint/38016

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