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学科主题: Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
题名: Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment
作者: Wang, Qian1, 2; Li, Zhu1, 2; Cheng, Shuiping1; Wu, Zhenbin1
通讯作者: Cheng, SP, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: Phytoremediation ; Heavy metals ; In situ ; Submerged macrophyte ; Humic acids
刊名: ENVIRONMENTAL EARTH SCIENCES
发表日期: 2010-09-01
DOI: 10.1007/s12665-009-0444-3
卷: 61, 期:6, 页:1207-1213
收录类别: SCI
文章类型: Article
部门归属: [Wang, Qian; Li, Zhu; Cheng, Shuiping; Wu, Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Wang, Qian; Li, Zhu] Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: National Major Program of Science and Technology [2008ZX07316-004]; Chinese Academy of Sciences [KZCX2-YW-426]
类目[WOS]: Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
研究领域[WOS]: Environmental Sciences & Ecology ; Geology ; Water Resources
摘要: Physiological responses and metal accumulation in Vallisneria spiralis L. exposed to copper and cadmium contaminated sediment were examined at different metal concentrations and the influence of humic acids on copper and cadmium accumulation was also studied. The plants of V. spiralis accumulated high amount of copper and cadmium. The maximum accumulation of 396 and 114 mg kg(-1) DW copper were found in the roots and shoots, respectively, at 614 mg kg(-1) DW after 21 days' copper exposure; they were 63.8 and 48.0 mg kg(-1) DW for cadmium at 88.69 mg kg(-1) DW. The plants showed decrease in chlorophyll content with the increasing concentration of copper/cadmium in sediment. With addition of humic acids from 3.09 to 7.89 g kg(-1) DW, both copper and cadmium accumulation in V. spiralis were significantly inhibited (p < 0.01). The cadmium concentrations of roots and shoots of plant decreased 26.4-50.3 and 14.3-33.0% under cadmium treatments, respectively; copper accumulation decreased much more with 44.0-77.0 and 35.0-62.7%, respectively. It was concluded that V. spiralis appeared to be an ideal candidate for the phytoremediation of copper and cadmium polluted sediments, and humic acids had an important role in regulating copper and cadmium bioavailability and toxicity in sediments.
英文摘要: Physiological responses and metal accumulation in Vallisneria spiralis L. exposed to copper and cadmium contaminated sediment were examined at different metal concentrations and the influence of humic acids on copper and cadmium accumulation was also studied. The plants of V. spiralis accumulated high amount of copper and cadmium. The maximum accumulation of 396 and 114 mg kg(-1) DW copper were found in the roots and shoots, respectively, at 614 mg kg(-1) DW after 21 days' copper exposure; they were 63.8 and 48.0 mg kg(-1) DW for cadmium at 88.69 mg kg(-1) DW. The plants showed decrease in chlorophyll content with the increasing concentration of copper/cadmium in sediment. With addition of humic acids from 3.09 to 7.89 g kg(-1) DW, both copper and cadmium accumulation in V. spiralis were significantly inhibited (p < 0.01). The cadmium concentrations of roots and shoots of plant decreased 26.4-50.3 and 14.3-33.0% under cadmium treatments, respectively; copper accumulation decreased much more with 44.0-77.0 and 35.0-62.7%, respectively. It was concluded that V. spiralis appeared to be an ideal candidate for the phytoremediation of copper and cadmium polluted sediments, and humic acids had an important role in regulating copper and cadmium bioavailability and toxicity in sediments.
关键词[WOS]: DISSOLVED ORGANIC-MATTER ; HEAVY-METALS ; AQUATIC PLANTS ; TOXICITY ; ZINC ; LEAD ; PHYTOREMEDIATION ; BIOACCUMULATION ; BIOAVAILABILITY ; MACROPHYTES
语种: 英语
WOS记录号: WOS:000281668400011
ISSN号: 1866-6280
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13683
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China

Recommended Citation:
Wang, Qian; Li, Zhu; Cheng, Shuiping; Wu, Zhenbin.Influence of humic acids on the accumulation of copper and cadmium in Vallisneria spiralis L. from sediment,ENVIRONMENTAL EARTH SCIENCES,2010,61(6):1207-1213
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