| 不同体系中黄河沉积物对Cd2+吸附能力的比较 |
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| 引用本文： | 何江,王新伟,李朝生.不同体系中黄河沉积物对Cd2+吸附能力的比较[J].上海环境科学,2003,22(9):595-598. |
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| 作者姓名： | 何江 王新伟 李朝生 |
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| 作者单位： | 内蒙古大学生态与环境科学系,内蒙古大学生态与环境科学系,内蒙古大学生态与环境科学系 呼和浩特 010021,呼和浩特 010021,呼和浩特 010021 |
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| 基金项目： | 内蒙古自然科学基金项目,编号990303-1;内蒙古教育厅重点项目基金项目,编号ZD9901;内蒙古"321人才工程"基金项目,编号内人(99)51;教育部高等院校骨干教师基金项目和内蒙古"111工程"基金项目. |
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| 摘 要： | 以黄河包头段的沉积物为吸附剂,分别以Cd~(2 )单离子溶液体系和Pb~(2 )、Cu~(2 )、Zn~(2 )、Cd~(2 ) 4种离子的混合溶液体系为吸附质,开展了在不同体系中Cd~(2 )的吸附、形态转化及释放等的比较实验。结果表明,不同体系中,Cd~(2 )的吸附等温线类型、吸附量、pH突跃区域的差别均较大,但不同体系中Cd~(2 )被沉积物吸附后的形态转化趋势基本相同;多离子体系中Cd~(2 )被吸附后的释放百分率比对应时间的单离子体系大,且释放曲线的峰型亦不同。
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| 关 键 词： | 不同溶液体系 吸附 形态转化 释放 黄河沉积物 离子 |
Comparison Study on Cd2+ Sorption Capacity of Yellow River Sediments in Different Systems |
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| He Jiang Wang Xinwei Li Chaosheng.Comparison Study on Cd2+ Sorption Capacity of Yellow River Sediments in Different Systems[J].Shanghai Environmental Science,2003,22(9):595-598. |
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| Authors: | He Jiang Wang Xinwei Li Chaosheng |
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| Abstract: | Sediments were taken from the Baotou reach of Yellow River as adsorbent, and single and mixed so -lution systems made up of Cd2 , Pb2 , Cu2 and Zn2 as adsorbate, and comparative experiment on adsorption, transformation and release of Cd2 on Yellow River sediments in different systems have been conducted. The result showed that the adsorption isotherm, adsorption capacity and pH- dependent area were different greatly, but transformation of Cd2 has only a little change. In addition, release percentage of Cd2 adsorbed on polyion coexisting system was far greater than the single system, and the release curves were different in two systems. |
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| Keywords: | Adsorption Transformation Release Yellow River sediments Ion |
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