Especiação de metais-traço em sedimentos de florestas de manguezais com Avicennia e Rhizophora Metal speciation under Rhizophora and Avicennia mangles

Autor: Regina Célia Bastos de Andrade, Sambasiva Rao Patchineelam

Publikováno v: Química Nova, Vol 23, Iss 6, Pp 733-736 (2000)

Speciation studies of Fe, Cr, Co, Ni and Cu on reactive fraction (adsorved on oxides, hydroxides, carbonates and clay minerals) and pyrite were performed in Avicennia schaueriana and Rhizophora mangle sediments from Amapá shoreline-Brazil. The soil

Externí odkaz: https://doaj.org/article/03aed4b361464339830f99665500db4f

Net Ecosystem Metabolism and Nonconservative Fluxes of Organic Matter in a Tropical Mangrove Estuary, Piauí River (NE of Brazil)

Autor: Marcelo F. L. Souza, Bastiaan A. Knoppers, Simone S. Freitas, Regina Célia Bastos de Andrade, Viviane R. Gomes

Publikováno v: Estuaries and Coasts. 32:111-122

Net ecosystem metabolism (NEM) was measured in the Piaui River estuary, NE Brazil. A mass balance of C, N, and P was used to infer its sources and sinks. Dissolved inorganic carbon (DIC) concentrations and fluxes were measured over a year along this

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04de027ff2ba74841383fffc385ea5e2
https://doi.org/10.1007/s12237-008-9104-1

Uptake of Co, Cr, Ni and Cu by Pyrite in a tropical marine environment

Autor: Sambasiva R. Patchineelam, Regina Célia Bastos de Andrade

Publikováno v: Rem: Revista Escola de Minas v.54 n.4 2001
REM. Revista Escola de Minas
Escola de Minas
instacron:ESCOLA DE MINAS
Rem: Revista Escola de Minas, Volume: 54, Issue: 4, Pages: 299-302, Published: DEC 2001

The formation of pyrite and associated trace metals during diagenesis in a tropical pristine environment was investigated. Except for Cr, there was a generic trend towards increasing trace metal piritization with sedimentary depth. The results sugges

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27e232607d9f92a805d618cca38a3e46
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672001000400011