Analytical limitations and error sources in complexation studies of Cu(II) with fulvic acids by potentiometric titrations

被引：8

作者：

Ricart, M ^{[1
]}

Villaescusa, I ^{[1
]}

delaTorre, E ^{[1
]}

机构：

[1] UNIV GIRONA, DEPT ENGN QUIM AGR & TECNOL AGROALIM, E-17071 GIRONA, SPAIN

来源：

REACTIVE & FUNCTIONAL POLYMERS | 1996年 / 28卷 / 02期

关键词：

potentiometry; error analysis; humic substances; complexation constants;

D O I：

10.1016/1381-5148(95)00068-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A potentiometric titration method has been used to obtain experimental data for acid-base and Cu complexation of soil fulvic acids. The uncertainty associated to the data has been studied in order to prove a Gaussian multiligand model, getting insight in the main sources of error. Based on this observations we concluded that it is difficult to evaluate the suitability of the model because the experimental values of complexed ligand obtained with sufficient certainty are a small percentage of the total complexation capacity of the ligand.

引用

页码：159 / 165

页数：7

共 6 条

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[4] PROPAGATION OF ERROR IN FULVIC-ACID TITRATION DATA - A COMPARISON OF 3 ANALYTICAL METHODS
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