Výsledky vyhledávání - "Betania F. Pereira"

Chemical and Spectroscopical Characterization of Humic Acids from two South Brazilian Coals of Different Ranks

Autor: Antonio S. Mangrich, Sonia Maria Cabral de Menezes, Deborah Pinheiro Dick, Betania F. Pereira

Publikováno v: Journal of the Brazilian Chemical Society, Vol 13, Iss 2, Pp 177-182 (2002)
Journal of the Brazilian Chemical Society v.13 n.2 2002
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 13, Issue: 2, Pages: 177-182, Published: 2002

Humic acids (HA) extracted from two coals of different ranks, from their regenerated samples and from a nitrated sample, were characterized by elemental analysis and by infra-red (FTIR), solid state 13C nuclear magnetic resonance (NMR) and eletronic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2afc7f0894e5cf4865ea295b8391e056
https://doi.org/10.1590/s0103-50532002000200008

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Use of Fe3+ ion probe to study intensively weathered soils utilizing electron paramagnetic resonance and optical spectroscopy

Autor: Elisete Guimarães, F. J Ponzoni, J. C Tomazoni, W. E. H Blum, S. P Balena, Antonio S. Mangrich, Betania F. Pereira, Iara Messerschmidt

Publikováno v: Journal of the Brazilian Chemical Society v.22 n.9 2011
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 22, Issue: 9, Pages: 1788-1794, Published: SEP 2011

Analises por espectroscopias de ressonância paramagnetica eletronica (EPR) e de ultravioleta-visivel por refletância difusa (DRUV-VIS) de solos intensamente intemperizados contendo altos niveis de oxidos- hidroxidos de ferro, a partir de um projeto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b71d69302d0d22f56b7a5fcc8add3c7b
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000900023

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Proposal of an EPR based method for pollution level monitoring in mangrove sediments

Autor: Iara Messerschmidt, Antonio S. Mangrich, Lenise da Silva, Betania F. Pereira

Publikováno v: Journal of the Brazilian Chemical Society v.20 n.2 2009
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 20, Issue: 2, Pages: 294-298, Published: 2009

The objective of this study was the monitoring of the pollution level of underwater mangrove sediments using electron paramagnetic resonance (EPR), near-infrared (NIR) spectroscopy and chemical analyses. EPR spectroscopy was useful to determine the p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2950d4a8d514abaf4a0ba32f0d826508
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532009000200014

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Akademický článek

AVALIAÇÃO DA LIBERAÇÃO DE ELEMENTOS TRAÇO EM SOLOS TRATADOS COM XISTO RETORTADO

Autor: Jeniffer V. dos Santos, Rafael J. B. De Presbiteris, Vanessa C. G. dos Santos, Marco T. Grassi, Iara Messerschmidt, Betânia F. Pereira, Rosane Martinazzo, Gilberto Abate

Publikováno v: Química Nova, Vol 40, Iss 5, Pp 496-505

Soils that had received successive applications of retorted oil shale (ROS) in an experiment under field conditions were used in this study, aiming to evaluate the availability of trace elements. In the batch tests, we observed that toxic elements pr

Externí odkaz: https://doaj.org/article/d4fcc5e745ee44bf8b19bdc9e5fbf693

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