THEORETICAL ASPECTS OF THE DIRECT TITRATION OF NATURAL-WATERS AND ITS INFORMATION YIELD FOR TRACE-METAL SPECIATION
THEORETICAL ASPECTS OF THE DIRECT TITRATION OF NATURAL-WATERS AND ITS INFORMATION YIELD FOR TRACE-METAL SPECIATION
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DOI：
10.1016/s0003-2670(01)95456-x
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发表时间：
1982-01-01
影响因子：
6.2
通讯作者：
RUZIC, I
中科院分区：
文献类型：
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作者：
RUZIC, I
根据游离和束缚金属浓度与游离金属浓度之比的曲线图，描述了一种解释天然水中痕量金属直接滴定的新方法。以1:1复杂地层模型为基础，讨论了该方法在天然水体中痕量金属形态的应用。对于形成具有不同条件稳定常数的两种类型的配合物或金属被吸附在胶体颗粒上的情况，提出了解释实验结果的程序。从理论上介绍了该方法与以往方法相比的优点，并通过对海水中铜（II）的实验进行了说明。本文还讨论了该方法的局限性。
A new method for interpretation of direct titration of natural waters with trace metals is described based on a graph of the ratio between the free and bound metal concentration vs. the free metal concentration. The application of this method, which is based on a 1:1 complex formation model, is discussed with respect to trace metal speciation in natural waters. Procedures for interpretation of experimental results are proposed for those cases where two types of complexes with different conditional stability constants are formed, or where the metal is adsorbed on colloidal particles. The advantages of the proposed method in comparison with earlier methods are presented theoretically and illustrated with some experiments on copper(II) in seawater. The limitations of the method are also discussed.