Effect of the ionic strength on the acid-base titration curves of a soil fulvic acid

被引：2

作者：

Ramos, A ^{[1
]}

López, S ^{[1
]}

López, R ^{[1
]}

Fiol, S ^{[1
]}

Arce, F ^{[1
]}

Antelo, JM ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Fac Quim, Dept Quim Fis, E-15706 Santiago, Spain

来源：

ANALUSIS | 1999年 / 27卷 / 05期

关键词：

D O I：

10.1051/analusis:1999270414

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Potentiometric titrations of a soil extracted fulvic acid solutions were carried out varying the initial concentration and the background electrolyte (KNO3) concentration in the range from 5 10(-3) M to 1.0 M. The mastercurve approach was tried, but the data did not merge into a single curve, so the CA and LOGA-1 methods were applied to the experimental Q(pH) curves to analyse the ionic strength effect over the fulvic acid ionization.

引用

页码：414 / 417

页数：4

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