热处理对沙漠边缘土壤腐殖酸荧光性质及其与Cu（Ⅱ）络合作用的影响/Effect of Heat Treatment on Fluorescence Properties of Humic Acids of Soil beside Desert and Their Cu（ Ⅱ ） Complexing Behavior[J]

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Publication date
1 January 2012
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Abstract

通过荧光光谱法研究了80℃处理下沙漠边缘土壤腐殖酸荧光性质及其与Cu（Ⅱ）络合行为的变化。热处理导致类富里酸的发射波长发生蓝移，类富里酸和类腐殖酸的荧光强度降低，它们与Cu（Ⅱ）络合的条件稳定常数（lgKa）降低，结合常数（lgKe）增加，腐殖酸中参与Cu（Ⅱ）络合的荧光基团和位点数增多。研究表明，干旱区高温环境会导致腐殖酸结构及组成发生变化，从而影响Cu（Ⅱ）在土壤中的迁移

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