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The Determination of the Stability Constant of Ternary Surface Complexes at Liquid–Solid Interfaces in Natural Water

✍ Scribed by Zhang Zhengbin; Liu Liansheng; Liu Guosheng; Yu Zhiming

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
222 KB
Volume
182
Category
Article
ISSN
0021-9797

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✦ Synopsis

This article suggests a new method of determining the stability constant of ternary coordination complexes at liquid-solid interfaces in natural water. Its basic principle is based on the rule of left-right shift of an S-type curve, from which the ''volcano'' curve of exchange ratio E(%) vs concentration of organic matter is obtained. The volcano curve is further used to obtain the stability

constant ratios (K SAM /K SM ) by using respectively the methods (1) of equality of E(%) at [H 2 A] Å [H 2 A] 0 , and (2) of [H 2 A] max .

From the known K SM , the stability constant K SAM of a liquid-solid interfacial ternary surface complex can be obtained.

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