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Mobilization potential of heavy metals: A comparison between river and lake sediments
Fang, T; Liu, JT; Xiao, BD; Chen, XG; Xu, XQ; Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2005-02-01
Source PublicationWATER AIR AND SOIL POLLUTION
ISSN0049-6979
Volume161Issue:1-4Pages:209-225
AbstractToxic 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.; 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.
SubtypeArticle
KeywordAcid-volatile Sulfides Heavy Metals Mobilization Overlaying Water Sediment
DepartmentChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Subject AreaEnvironmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
DOI10.1007/s11270-005-4284-9
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000228894400013
WOS KeywordACID-VOLATILE SULFIDE ; QUALITY CRITERIA ; TECHNICAL BASIS ; CADMIUM ; BIOAVAILABILITY ; TOXICITY
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9272
Collection期刊论文
Corresponding AuthorLiu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
AffiliationChinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
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,&Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China.(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.
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