3 documents found, page 1 of 1
Distribuição de mercúrio total como indicador de poluição urbana e industrial n...
Marins, Rozane Valente; Paula Filho, Francisco José de; Maia, Saulo Robério Rodrigues; Lacerda, Luiz Drude de; Marques, Wanessa Sousahe monitoring of the pollution status of the Brazilian coast is hampered by the lack of a consistent environmental indicator. We propose Hg as an environmental proxy to anthropogenic pollution of coastal regions due to its absence in the Brazilian geology, its ubiquity in anthropogenic effluents, and its toxicity. Available data suggest Hg "backgrounds" in coastal sediments of 1-10 ng g-1, in the East and 15-30...
Distribuição espacial de minerais pesados nos sedimentos superficiais da Plataf...
Aguiar Neto, Antônio Borges de; Marques, Wanessa Sousa; Freire, George Satander SáSpatial distribution of heavy minerals in the superficial sediments of the Western Ceará Continental Shelf, Northeast of Brazil. The continental shelf sediments of the west coast of Ceará were investigated about their texture, calcium carbonate and heavy minerals with the generation of digital bottom model of this shelf. Multivariate statistics analyses were applied for mineralogical data to aid interpretation ...
Principal component analysis (PCA) and mineral associations of litoraneous faci...
Marques, Wanessa Sousa; Sial, Alcides Nobrega; Menor, Eldemar de Albuquerque; Ferreira, Valderez Pinto; Freire, George Satander SáThe distribution of mineral phases according to the provenance of carbonate and terrigenous facies of carbonate sediments from a large area of the continental shelf of northeast Brazil was investigated using a major element multivariate analysis approach. Heavy minerals such as ilmenite are restricted to the litoraneous facies of the continental shelf of the states of Paraı´ba and Pernambuco, and clay minerals ...