Ocorrência De Mercúrio Em Rochas, Soloe Sedimento Fluvial Na Bacia Do Rio Iguaçu, Estado Do Paraná, Brasil
Year: 2007
Type: article
Abstract: Mercury contents in rocks, soil and stream sediments were determined to investigate the origin of the geochemical anomaly found in sediments of the Iguaçu River as indicated in previous studies. Except for its headwaters in the Curitiba area with Precambrian basement rocks and Cenozoic sediments of the Curitiba Basin, the Iguaçu River lies across the Paraná Basin comprising Paleozoic to Mesozoic sedimentary and volcanic rocks. In the study area, the geological units include basaltic and dacitic rocks of the Serra Geral Formation (Cretaceous) and black shales of the Irati Formation (Permian-Triassic). Total mercury was measured by thermal decomposition with atomic absorption spectrometry and Zeeman correction in volcanic rocks (0.2 to 0.4 ng/g), black shales (286 and 430 ng/g), soil (average of 103±57 ng/g, grain size
Source: Geociências
Institution: Universidade Estadual de Campinas (UNICAMP)
Language: Portuguese
Subfield: Health, Toxicology and Mutagenesis
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2242885254