Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Ademir dos Santos"'
Publikováno v:
Eclética Química, Vol 38, Iss 1, Pp 136-146 (2018)
The State of São Paulo is the great banana producer with 1.17 million tons per year. In this area, 33.113 ha are destined to the production of 810.000 tons of banana. The use fertilizers in the banana plant cultivation, in addition with deforestatio
Externí odkaz:
https://doaj.org/article/5525bd6455c04cc08f966b396a7acdc5
Autor:
Natália Noronha Ferreira, Ademir dos Santos, Maria Lucia Ribeiro, Luciana Camargo de Oliveira, Wander Gustavo Botero, Julio Cesar Rocha
Publikováno v:
Revista Brasileira Multidisciplinar - ReBraM /Brazilian Multidisciplinay Journal, Vol 12, Iss 2, Pp 205-226 (2015)
Humic substances (HS) are heterogeneous molecular aggregates, which have no defined structure and constitute the principal fraction of natural organic matter. They can act as complexation agents, due to their high density of functional groups, and th
Externí odkaz:
https://doaj.org/article/2ee8fa0fa3e9490aabedce6a97cfbf5d
Autor:
Ademir dos SANTOS, Maria Olímpia de Oliveira REZENDE, André Henrique ROSA, Luiz Fabrício ZARA, Julio Cesar ROCHA
Publikováno v:
Eclética Química, Vol 27, Iss 1 (2018)
Estudou-se a distribuição de Cr, Ni, Cu, Cd e Pb em frações de substâncias húmicas (SH) de diferentes tamanhos moleculares. As SH foram extraídas de amostras de água (SHA) e de sedimentos de superfície (SHSS), interface/água (SHSI) e fundo
Externí odkaz:
https://doaj.org/article/e5655e3ba8b944cbb613aa4b0ccb00f7
Autor:
Mirela Cristina de Oliveira Cordovil, André Gustavo Ribeiro Mendonça, Wander Gustavo Botero, Ademir dos Santos, Julio Cesar Rocha, Kaline de Mello, Rogério Hartung Toppa, Luciana Camargo de Oliveira
Publikováno v:
Química Nova, Vol 37, Iss 5, Pp 770-775 (2014)
This study used chemometric tools and a Geographic Information System (GIS) to determine the influence of organic matter and anthropogenic activity on the distribution of metal species between two major communities of the Middle Negro River Basin-AM.
Externí odkaz:
https://doaj.org/article/0c65fbefbd314a66a0f60d6e355041d8
Autor:
Juliano José Corbi, Felipe André dos Santos, Ricardo Zerlin, Ademir dos Santos, Claudio Gilberto Froehlich, Susana Trivinho-Strixino
Publikováno v:
Brazilian Archives of Biology and Technology, Vol 54, Iss 3, Pp 613-620 (2011)
The aim of this work was to study the contamination by chromium in the sediments of the Monte Alegre stream and in the larvae of Odonata and the possible impact caused by them on the stream macroinvertebrates community. It was found that chromium con
Externí odkaz:
https://doaj.org/article/7ed87c40b3f44c2197151c4937d216f4
Autor:
Luciana Camargo de Oliveira, Wander Gustavo Botero, Ademir dos Santos, Mirela Cristina de Oliveira Cordovil, Julio Cesar Rocha, Heliandro Cordovil da Silva
Publikováno v:
Química Nova, Vol 34, Iss 8, Pp 1303-1308 (2011)
The region of Aracá River (Middle and Upper Rio Negro-AM) has peculiar characteristics, having soils with atypical profile and high organic matter contents in great deep. The levels of aluminum and iron in the soil samples increased as a function of
Externí odkaz:
https://doaj.org/article/a558e308fedf4a25adfe672122d340fc
Bioaccumulation of metals in aquatic insects of streams located in areas with sugar cane cultivation
Publikováno v:
Química Nova, Vol 33, Iss 3, Pp 644-648 (2010)
Streams located in areas of sugar cane cultivation receive elevated concentrations of metal ions from soils of adjacent areas. The accumulation of metals in the sediments results in environmental problems and leads to bioaccumulation of metal ions by
Externí odkaz:
https://doaj.org/article/48cf2b13c30f497e8b4df7171bcc8581
Publikováno v:
Química Nova, Vol 32, Iss 8, Pp 2018-2022 (2009)
The work reported here involved the characterization of sludges produced at water treatment plants in Jaboticabal-SP using FeCl3 as flocculant, and in Taquaritinga-SP and Manaus-AM using Al2(SO4)3 as flocculant. An evaluation was also made of the int
Externí odkaz:
https://doaj.org/article/0066a847447e4b398a609d877162dd76
Autor:
Ademir dos Santos, Luciana Camargo de Oliveira, Wander Gustavo Botero, André Gustavo Ribeiro Mendonça, Felipe André dos Santos, Julio Cesar Rocha, Maria Lúcia Ribeiro, Alessandro Silva de Oliveira
Publikováno v:
Química Nova, Vol 32, Iss 7, Pp 1693-1697 (2009)
Samples of soil, water and sediment were collected and analyzed in order to evaluate chromium contamination due to deposition of tannery residues onto soils under different management regimes. The results showed that soils used for sugar cane cultiva
Externí odkaz:
https://doaj.org/article/2935d927a0014f1a8f32dea29fdc1253
Autor:
Luciana Camargo de Oliveira, Ricardo Lima Serudo, Wander Gustavo Botero, André Gustavo Ribeiro Mendonça, Ademir dos Santos, Julio Cesar Rocha, Fernando da Silva Carvalho Neto
Publikováno v:
Química Nova, Vol 30, Iss 2, Pp 274-280 (2007)
Soils play an important role in the biogeochemical cycle of mercury as a sink for and source of this metallic species to atmospheric and hydrological compartments. In the study reported here, various types of soil were evaluated to ascertain the infl
Externí odkaz:
https://doaj.org/article/81d10afb1a9f4958a2155d0c5f942c90