1.
Talanta
; 50(5): 1057-63, 1999 Dec 06.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18967800
RESUMO
Humic acids (HA) are the main components of soil organic matter which can form complexes with metal ions and other soil and/or water contaminants. Here, we focus on their acid-base properties. HA were extracted from two different soils (Tipic Ustifluvent and Entic Haplustoll) with different vegetation. In this study we use a simple method, differential scanning potentiometry (DSP), to determine HA buffer capacity distribution, apparent dissociation constant values and surface charge development.