POTENTIOMETRIC STUDY OF ACID-BASE PROPERTIES OF HUMIC-ACID USING LINEAR FUNCTIONS FOR TREATMENT OF TITRATION DATA

被引：57

作者：

ALEIXO, LM

GODINHO, OES

DACOSTA, WF

机构：

[1] Instituto de Química, Universidade Estadual de Campinas (UNICAMP), 13081 Campinas, São Paulo

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 257卷 / 01期

关键词：

POTENTIOMETRY; TITRIMETRY; HUMIC SUBSTANCES;

D O I：

10.1016/0003-2670(92)80147-Y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A potentiometric study of the acid-base properties of humic acid was made with the objective of determining the pK(a) value and concentration of each titratable group. The use of linear equations in the treatment of titration curves led to the characterization of six titratable groups, which permits the acid-base properties to be explained and will be useful in studies of soil and environmental chemistry.

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页码：35 / 39

页数：5

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