Methodological approach and general guidelines to geochemical mapping and background-baseline analysis for environmental assessment: a case study in the Carajás Mineral Province, Brazil

Autor: Pedro Walfir Martins Souza-Filho, Prafulla Kumar Sahoo, Marcio Sousa da Silva, Roberto Dall’Agnol, Carlos Augusto Medeiros Filho, Alessandro Sabá Leite, Jair da Silva Ferreira Júnior, Wilson da Rocha Nascimento Junior, Géssica da Silva e Silva, Gabriel Negreiros Salomão, Fabiana Sarracini, Renato Oliveira Silva Junior, Marlene Furtado da Costa
Jazyk: English<br />Spanish; Castilian<br />French<br />Portuguese
Rok vydání: 2023
Předmět:
Zdroj: Brazilian Journal of Geology, Vol 52, Iss 4 (2023)
Druh dokumentu: article
ISSN: 2317-4692
2317-4889
DOI: 10.1590/2317-4889202220220018
Popis: Abstract We present this manuscript as a methodological approach and general guidelines for geochemical mapping and background/baseline projects for environmental assessment in tropical areas. A case study was carried out in the Itacaiúnas River watershed (IRW), Eastern Amazon, to fill in a gap in knowledge on the distribution of chemical elements, particularly those potentially toxic, in the near-surface environment of the area. The high-impact results of this research project revealed the need for similar scientific investigation across the globe with the implementation of a systematic methodology. The study shows, for example, the importance of well-planned field activities, multi-medium sampling, analytical methods, laboratory procedures, database construction, and general aspects of data processing and statistical treatment. The importance of this contribution is that it can be used as a reference in support of geospatial analysis in research within the scope of geochemical mapping and background-baseline projects. The database is accessible through a web-based geographic information system front-end; a Geochemical Atlas of the IRW will be available as soon as possible.
Databáze: Directory of Open Access Journals
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