Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima
Monitoring of soil carbon storage may indicate possible effects of climate change on the terrestrial environment and it is therefore necessary to understand the influence of redox potential and chemical characteristics of humic substances (HS) of Antarctic soil. Five soils from King George Island were used. HS were extracted, quantified and characterized by potentiometry and the content of total carbon and nitrogen determined. HS of these soils had greater aliphatic character, low content of phenolic groups, lower acidity and lower formal standard electrode potential, compared to HS of soils from other regions, suggesting they are more likely to be oxidized.
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Digital revista |
| Language: | Portuguese |
| Published: |
Sociedade Brasileira de Química
2013
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900010 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
oai:scielo:S0100-40422013000900010 |
|---|---|
| record_format |
ojs |
| spelling |
oai:scielo:S0100-404220130009000102013-11-12Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica MarítimaCarvalho,Juliana Vanir de SouzaMendonça,Eduardo de SáLa Scala Júnior,NewtonReis,CésarReis,Efrain LázaroSchaefer,Carlos Ernesto G. R. redox titrations redox potencial C-CO2 emission Monitoring of soil carbon storage may indicate possible effects of climate change on the terrestrial environment and it is therefore necessary to understand the influence of redox potential and chemical characteristics of humic substances (HS) of Antarctic soil. Five soils from King George Island were used. HS were extracted, quantified and characterized by potentiometry and the content of total carbon and nitrogen determined. HS of these soils had greater aliphatic character, low content of phenolic groups, lower acidity and lower formal standard electrode potential, compared to HS of soils from other regions, suggesting they are more likely to be oxidized.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.36 n.9 20132013-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900010pt10.1590/S0100-40422013000900010 |
| institution |
SCIELO |
| collection |
OJS |
| country |
Brasil |
| countrycode |
BR |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-scielo-br |
| tag |
revista |
| region |
America del Sur |
| libraryname |
SciELO |
| language |
Portuguese |
| format |
Digital |
| author |
Carvalho,Juliana Vanir de Souza Mendonça,Eduardo de Sá La Scala Júnior,Newton Reis,César Reis,Efrain Lázaro Schaefer,Carlos Ernesto G. R. |
| spellingShingle |
Carvalho,Juliana Vanir de Souza Mendonça,Eduardo de Sá La Scala Júnior,Newton Reis,César Reis,Efrain Lázaro Schaefer,Carlos Ernesto G. R. Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| author_facet |
Carvalho,Juliana Vanir de Souza Mendonça,Eduardo de Sá La Scala Júnior,Newton Reis,César Reis,Efrain Lázaro Schaefer,Carlos Ernesto G. R. |
| author_sort |
Carvalho,Juliana Vanir de Souza |
| title |
Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| title_short |
Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| title_full |
Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| title_fullStr |
Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| title_full_unstemmed |
Caracterização potenciométrica de substâncias húmicas extraídas de solos da Antártica Marítima |
| title_sort |
caracterização potenciométrica de substâncias húmicas extraídas de solos da antártica marítima |
| description |
Monitoring of soil carbon storage may indicate possible effects of climate change on the terrestrial environment and it is therefore necessary to understand the influence of redox potential and chemical characteristics of humic substances (HS) of Antarctic soil. Five soils from King George Island were used. HS were extracted, quantified and characterized by potentiometry and the content of total carbon and nitrogen determined. HS of these soils had greater aliphatic character, low content of phenolic groups, lower acidity and lower formal standard electrode potential, compared to HS of soils from other regions, suggesting they are more likely to be oxidized. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2013 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900010 |
| work_keys_str_mv |
AT carvalhojulianavanirdesouza caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima AT mendoncaeduardodesa caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima AT lascalajuniornewton caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima AT reiscesar caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima AT reisefrainlazaro caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima AT schaefercarlosernestogr caracterizacaopotenciometricadesubstanciashumicasextraidasdesolosdaantarticamaritima |
| _version_ |
1756387540234928128 |