KINETICS OF ALUMINUM-FULVIC ACID COMPLEXATION IN ACIDIC WATERS.

被引：0
|
作者：
Plankey, Brian J. [1 ]
Patterson, Howard H. [1 ]
机构：
[1] Univ of Maine, Orono, ME, USA, Univ of Maine, Orono, ME, USA
来源：
Environmental Science and Technology | 1987年 / 21卷 / 06期
关键词：
ACIDS - CHEMICAL REACTIONS - Reaction Kinetics - ORGANIC CHEMICALS - Chemical Reactions;
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摘要：
A fluorescence technique has been used to study the complex formation kinetics of aluminum with a single metal-free fulvic acid isolated from an Adirondack Mountain forest soil. In the pH range of 3. 0-4. 5, two kinetically distinguishable components of the fulvic acid mixture have been identified, which define two types of average aluminum binding sites. Both fulvic acid average sites conform to a bidentate chelating binding site kinetic analysis, from which rate and equilibrium parameters have been obtained. From comparison of rate and equilibrium constants of aluminum-salicyclic acid complexation, we conclude that the faster reacting component of fulvic acid probably contains salicylic acid type aluminum binding sites. Additional study results are discussed.
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页码：595 / 601
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