Mobilization potential of heavy metals: A comparison between river and lake sediments
文献类型：期刊论文
| 作者 | Fang, T; Liu, JT; Xiao, BD; Chen, XG; Xu, XQ |
| 刊名 | WATER AIR AND SOIL POLLUTION
 |
| 出版日期 | 2005-02-01 |
| 卷号 | 161期号:1-4页码:209-225 |
| 关键词 | acid-volatile sulfides heavy metals mobilization overlaying water sediment |
| ISSN号 | 0049-6979 |
| 通讯作者 | Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | Toxic metals introduced into aquatic environments by human activities accumulation in sediments. A common notion is that the association of metals with acid volatile sulfides (AVS) affords a mechanism for partitioning metals from water to solid phase, thereby reducing biological availability. However, variation in environmental conditions can mobilize the sediment-bound metal and result in adverse environmental impacts. The AVS levels and the effect of AVS on the fate of Cu, Cd, Zn, Ni in sediments in the the Changjiang River, a suboxic river with sandy bottom sediment and the Donghu Lake, a anoxic lake with muddy sediment in China, were compared through aeration, static adsorption and release experiments in laboratory. Sips isotherm equation, kinetic equation and grade ion exchange theory were used to describe the heavy metal adsorb and release process. The results showed that AVS level in the lake sediment are higher than that of the river. Heavy metals in the overlying water can transfer to sediments incessantly as long as the sediment remains undisturbed. The metal release process is mainly related to AVS oxidation in lake sediment while also related to Org-C and Fe-Mn oxyhydroxide oxidation in river sediment. The effect of sulfides on Zn and Ni is high, followed by Cd, and Cu is easy bound to Org-C. AVS plays a major role in controlling metals activity in lake sediment and its presence increase the adsorption capacity both of the lake and river sediments. |
| 英文摘要 | Toxic metals introduced into aquatic environments by human activities accumulation in sediments. A common notion is that the association of metals with acid volatile sulfides (AVS) affords a mechanism for partitioning metals from water to solid phase, thereby reducing biological availability. However, variation in environmental conditions can mobilize the sediment-bound metal and result in adverse environmental impacts. The AVS levels and the effect of AVS on the fate of Cu, Cd, Zn, Ni in sediments in the the Changjiang River, a suboxic river with sandy bottom sediment and the Donghu Lake, a anoxic lake with muddy sediment in China, were compared through aeration, static adsorption and release experiments in laboratory. Sips isotherm equation, kinetic equation and grade ion exchange theory were used to describe the heavy metal adsorb and release process. The results showed that AVS level in the lake sediment are higher than that of the river. Heavy metals in the overlying water can transfer to sediments incessantly as long as the sediment remains undisturbed. The metal release process is mainly related to AVS oxidation in lake sediment while also related to Org-C and Fe-Mn oxyhydroxide oxidation in river sediment. The effect of sulfides on Zn and Ni is high, followed by Cd, and Cu is easy bound to Org-C. AVS plays a major role in controlling metals activity in lake sediment and its presence increase the adsorption capacity both of the lake and river sediments. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Environmental Sciences; Meteorology & Atmospheric Sciences; Water Resources |
| 类目[WOS] | Environmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 关键词[WOS] | ACID-VOLATILE SULFIDE ; QUALITY CRITERIA ; TECHNICAL BASIS ; CADMIUM ; BIOAVAILABILITY ; TOXICITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000228894400013 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9272]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, T,Liu, JT,Xiao, BD,et al. Mobilization potential of heavy metals: A comparison between river and lake sediments[J]. WATER AIR AND SOIL POLLUTION,2005,161(1-4):209-225. |
| APA | Fang, T,Liu, JT,Xiao, BD,Chen, XG,&Xu, XQ.(2005).Mobilization potential of heavy metals: A comparison between river and lake sediments.WATER AIR AND SOIL POLLUTION,161(1-4),209-225. |
| MLA | Fang, T,et al."Mobilization potential of heavy metals: A comparison between river and lake sediments".WATER AIR AND SOIL POLLUTION 161.1-4(2005):209-225. |
入库方式： OAI收割
来源：水生生物研究所
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