Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 243: Issue 3
Evaluation of Mercury Levels in Sediment and Soil Samples from Vila Nova River Basin, in Amapá State, Brazil, Using Radiochemical Neutron Activation Analysis
Authors:
C. Gonçalves IPEN/CNEN-SP-CP Supervisão de Radioquímica 11049-05422-970 São Paulo Brazil

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D. Fávaro IPEN/CNEN-SP-CP Supervisão de Radioquímica 11049-05422-970 São Paulo Brazil

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A. Melfi NUPEGEL-USP Instituto Astronômico e Geofisico São Paulo Brazil

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S. de Oliveira USP Instituto de Geociências São Paulo Brazil

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M. Vasconcellos IPEN/CNEN-SP-CP Supervisão de Radioquímica 11049-05422-970 São Paulo Brazil

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A. Fostier USP, Piracicaba CENA São Paulo Brazil

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J. Guimarães UFRJ Instituto de Biofisica Rio de Janeiro Brazil

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R. Boulet USP Instituto de Geociências São Paulo Brazil

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M. Forti INPE/MCT e NUPEGEL/USP Divisão de Ciências Atmosféricas Brazil

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Pages:
789–796
Online Publication Date:
02 Nov 2004
Publication Date:
17 Mar 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010611528825
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Abstract  

In the present work, results from a survey on mercury concentration in sediments and soils from a gold mining area along the Vila Nova river, in Amapá State, Brazil, are presented. These values were compared with those from the Igarapé Pedra Preta basin, an area unaffected by mining activities. Total mercury contents were determined in the muddy (silt+clay) fraction of the sediments and in the <2 mm fraction of the soils using radiochemical neutron activation analysis (RNAA). The detection limit of the method was 54 µg·kg–1 for soils and 14 µg·kg–1 for sediments when 200 mg of sample were analysed. The Hg results obtained from a comparison between our current method (RNAA) and CV AAS are also presented. Mercury levels showed to be very high in the soils and sediments collected in the Vila Nova river (up to 2 mg·kg–1) when compared to background values (0.3 mg·kg–1) for this region. An enrichment factor was calculated, using Al as a normalizing factor. It showed values up to 8 in sediments of the Vila Nova river basin, indicating a relatively high degree of pollution as compared to the values of about 1 for the samples of the Igarapé Pedra Pretra basin.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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