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.
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页码：414 / 417
页数：4
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