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中文摘要：
本研究从三种供试材料：草炭、褐煤和风化煤中提取腐殖酸，采用NH4OAc和EDTA两种解吸剂，研究三种来源腐殖酸对Cu^2＋的吸附能力和吸附机制。研究结果表明：三种来源腐殖酸对Cu^2＋的吸附在吸附量上没有明显差异，但吸附机制却并不完全相同。三种来源腐殖酸对Cu^2＋的吸附均主要通过离子交换和络合（或螯合）作用，其中，草炭和褐煤提取的腐殖酸的离子交换作用显著大于风化煤提取的腐殖酸，而风化煤提取的腐殖酸的络合（或螯合）作用则明显大于草炭和褐煤提取的腐殖酸。
英文摘要：
Three types of humic acids from different sources, i. e. peat, lignite and weathering coal （ named as C - HA, H -HA and F- HA, respectively）, were extracted and the adsorption and desorption pattern of Cu by the three hurnic acids was investigated. The results showed that Cu^2＋ adsorption capacity of three types of humic acids were not significantly different. Desorption study revealed that the three types of humic acids adsorbed Cu^2＋ mainly through ion exchange and complexation, but the three acids behaved differently. Among them, the ion exchange ability of C - HA and H - HA was markedly stronger than that of F - HA, while, the complexation ability of F - HA was greater than that of C - HA and H - HA.
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