| 沉积物中酸挥发硫对上覆水中重金属含量的影响 |
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| 引用本文： | 梁涛,林健枝.沉积物中酸挥发硫对上覆水中重金属含量的影响[J].环境化学,1998,17(3):212-217. |
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| 作者姓名： | 梁涛 林健枝 |
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| 作者单位： | [1]北京大学城市与环境学系 [2]香港中文大学地理系 |
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| 基金项目： | 国家杰出青年基金资助[49525102] |
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| 摘 要： | 在实验室条件下，利用装有新鲜河流沉积物和上覆水且可控制环境参数的模拟体系及参比体系，通过定时定量投放重金属溶液，研究了富含酸挥发硫的河流沉积物对上覆水中重金属（铜，镉，铅，锌）含量的影响，并观察了模拟体系更换为清洁上覆水后沉积物中重金属的静态释放；随后考察了同一沉积物样品经酸化后对上覆水重金属含量的影响能力的变化及在更换为清洁上覆水后沉积物的静态释放。研究结果表明：水相金属迅速转移到沉积物中，被其
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| 关 键 词： | 沉积物 上覆水 重金属 硫化物 水体污染 |
THE ROLE OF AVS IN THE SEDIMENT AS REGULATOR OF METAL BIOAVAILABILITY IN OVERLYING WATER |
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| Liang Tao,Tao Shu.THE ROLE OF AVS IN THE SEDIMENT AS REGULATOR OF METAL BIOAVAILABILITY IN OVERLYING WATER[J].Environmental Chemistry,1998,17(3):212-217. |
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| Authors: | Liang Tao Tao Shu |
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| Abstract: | The influence of sediment with and without AVS to heavy metals (Cu, Cd, Pb, Zn) in overlying water has been studied under laboratory conditions, using simulation and reference system. The releasement of heavy metals from sediment to overlying water has been observed. The results showed that heavy metals in overlying water can transfer to the sediments and bound to organic substances and sulfides. The organic ligands play the main role. The effects of sulfides to zinic and cadmium are obvious, then the copper. The lead can hardly bound to sulfides. Once the metals bound to the sediments, they are difficult to release. |
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| Keywords: | sediment overlying water heavy metals AVS SEM |
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