Otro
Substâncias húmicas de turfa: estudo dos parâmetros que influenciam no processo de extração alcalina
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 23, n. 4, p. 472-476, 2000.
0100-4042
10.1590/S0100-40422000000400008
S0100-40422000000400008
S0100-40422000000400008.pdf
0000-0002-2042-018X
Autor
Rosa, André Henrique
Rocha, Julio Cesar
Furlan, Maysa
Resumen
This study reports the parameters which influence on extraction of humic substances (HS) from peat. The yield, organic and inorganic contend, E4/E6 ratio and elemental composition (C,H,N) of the extracted HS have been determined. The functional groups were identified by Fourier-transform infrared espectroscopy. The results showed influence of the extractor type, concentration, time, temperature and granular texture of the sample in the extraction. This work contributes to better understanding of the extraction process showing the necessity of the standard method to extract humic substances from soil Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)