| 香港河流沉积物中有机碳对铜的吸附特性 |
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| 引用本文： | 刘长发,卢晓霞,陶澍,林健枝.香港河流沉积物中有机碳对铜的吸附特性[J].环境化学,2000,19(4):335-340. |
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| 作者姓名： | 刘长发 卢晓霞 陶澍 林健枝 |
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| 作者单位： | 1. 北京大学城市与环境学系,北京,100871
2. 香港中文大学地理系,香港 |
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| 基金项目： | 香港中文大学联合书院访问学者计划，国家杰出青年基金(49525102)项目资助 |
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| 摘 要： | 采用厌氧序列分批滴定装置（ＡＳＢＴ）研究了香港青山湾避风塘和屯门河、城门河、林村河感潮河段沉积物中有机碳对铜的吸附特性。结果表明，在ｐＨ１６和ｐＨ７的条件下，沉积物中有机碳对铜的吸附特性可用Ｌａｎｇｍｕｉｒ等温式描述，铜在不同河流沉积物有机碳中的分配系数差别较大，吸附容量差别较小，Ｈ＾＋可以结合沉积物有机碳的重金属结合位点，导致吸附容量和分配系数随ｐＨ增大而增大。
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| 关 键 词： | 吸附 铜 有机碳 沉积物 河流 水质监测 香港 |
ADSORPTION OF COPPER TO ORGANIC CARBON IN SEDIMENTS,HONG KONG |
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| Liu Changfa,Lu Xiaoxia,Tao Shu,Lam Kim Che.ADSORPTION OF COPPER TO ORGANIC CARBON IN SEDIMENTS,HONG KONG[J].Environmental Chemistry,2000,19(4):335-340. |
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| Authors: | Liu Changfa Lu Xiaoxia Tao Shu Lam Kim Che |
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| Abstract: | The partitioning characteristics of copper to organic carbon in the river and nearshore sediment of Hong Kong were studied. The anoxic sequential batch titration (ASBT) technique was used to determine the binding capacity of sediments for copper . Having regard to the binding of copper to the acid volatile sulfide substances in the sediments, it was found that the Langmuir isotherm could be fitted to adsorption of copper to sediment organic carbon at pH 6 and 7. The partition coefficient Kd,oc was also calculated for each sample. It was also found that both sorption capacity and partition coefficient increase with increasing pH. |
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| Keywords: | adsorption copper organic carbon sediment |
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