Estabilidade da sílica biogênica extraída de capim Jaraguá (Hyparrhenia rufa) em solução de NaOH
AUTOR(ES)
Costa, Liovando M., Moreau, Ana Maria S. S., Moreau, Mauricio S.
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2010
RESUMO
Biogenic silica is used to describe compounds of hydrated silica (SiO2.nH2O), with specific shapes and sizes, deposited in plants. The chemical composition of biogenic silica and its stability in Jaraguá grass was studied in increasing concentration of NaOH. The analytical results demonstrated high concentration of Si, Al, Fe, Mg, P and low of Cu, Cd and Zn in the phytoliths composition. The silica bodies stability in NaOH solution with increasing concentration was different among the shapes and sizes. Silicified stomata and silicified plant tissues were dissolved along with the dumbbells because they are the less stable forms of biogenic silica.
Documentos Relacionados
- Recuperação e utilização de pastagens de capim-jaraguá (Hyparrhenia rufa) na engorda de novilhos em Marabá, Pará.
- Consorciacao de leguminosas forrageiras com Capim-jaragua (Hyparrhenia rufa Nees.) em Porto Velho, Rondonia.
- Cinzas volantes álcali-ativadas com solução combinada de NaOH e Ca(OH)2
- Cinzas volantes álcali-ativadas com solução combinada de NaOH e Ca(OH)2
- Efeito do intervalo e numero de cortes sobre os teores de carboidratos de reserva, peso das raizes e producao de materia seca do Capim jaragua (Hyparrhenia rufa (Ness) Stapf), apos diferentes tempos de rebrota.