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

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.

Bibliographic Details

Main Authors:	Souza-Filho,Pedro Walfir Martins, Sahoo,Prafulla Kumar, Silva,Marcio Sousa da, Dall’Agnol,Roberto, Medeiros Filho,Carlos Augusto, Leite,Alessandro Sabá, Ferreira Júnior,Jair da Silva, Nascimento Junior,Wilson da Rocha, Silva,Géssica da Silva e, Salomão,Gabriel Negreiros, Sarracini,Fabiana, Silva Junior,Renato Oliveira, Costa,Marlene Furtado da
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Geologia 2022
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892022000400309
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