Data/hora: 05/06/2024 02:01:34

Provedor de dados: | 190
País: | Brazil

Título:

Microwave as an alternative to sample preparation in the foliar tissue silicon analysis of wood species for colorimetric determination

Microondas como alternativa na abertura de amostras para dosagem de silício em tecido foliar de espécies florestais por determinação colorimétrica

Autores: | Pereira, Claudia Mara; Hansel, Fabrício Augusto; Radomski, Maria Izabel; Verdeckin, Maisa Gottardo.
Data: | 2010-03-22
Ano: | 2010
Palavras-chave: | Folhas; Digestão; Colorimetria; Eucalyptus benthamii; Maytenus ilicifolia; Silício Leaves  digestion  colorimetry  Eucalyptus benthamii  Maytenus ilicifolia  silicon.
Resumo: | The aim of this work was to test the viability of microwave digestion for the colorimetric determination of silicon in foliar tissues of wood species. In the test, the correlation coefficient was 0.998 in the concentration range of 0.4 to 7 mg.g-1. Spiked cellulose samples were used and the recovery was high than 90 % in two tested concentrations (2 e 4 mg.g-1). The obtained coefficients of variation were equal to 4.2 % and 7.0 % for espinheira santa (Maytenus ilicifolia) and eucalipto (Eucalyptus benthamii), respectively. The microwave-induced digestion was compared to autoclave-induced digestion by interlaboratorial test, with relative errors smaller than 17 % in all tested samples (n=10). Based on these results, the microwave digestion of foliar tissues samples of wood species showed to be an alternative to determination of silicon by colorimetric method performed at a wavelength of 410 nm.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/67
Editor: | Embrapa Florestas
Relação: | http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/67/64
Formato: | application/pdf

Fonte:

Pesquisa Florestal Brasileira; n. 56 (2008): jan./jun.; 105

Brazilian Journal of Forestry Research; n. 56 (2008): jan./jun.; 105

1983-2605

1809-3647

Fonte: | http://creativecommons.org/licenses/by-nc-nd/4.0