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题名: Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks
作者: Chen, Wei1; Jia, Yunlu1, 2; Li, Enhua3; Zhao, Shuang1, 2; Zhou, Qichao1, 2; Liu, Liming1; Song, Lirong1
通讯作者: Chen, W (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: RAPE BRASSICA-NAPUS ; RICE ORYZA-SATIVA ; MICROCYSTIN-LR ; WATER-TREATMENT ; MC-LR ; DEGRADATION ; TOXINS ; IRRIGATION ; EXPOSURE ; GROWTH
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
发表日期: 2012-12-18
DOI: 10.1021/es3027902
卷: 46, 期:24, 页:13370-13376
收录类别: SCI
文章类型: Article
部门归属: [Chen, Wei; Jia, Yunlu; Zhao, Shuang; Zhou, Qichao; Liu, Liming; Song, Lirong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Jia, Yunlu; Zhao, Shuang; Zhou, Qichao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Enhua] Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [40971249]; National Basic Research Program of China (973 Program) [2008CB418006]; National High Technology Research and Development Program of China [2009AA063005]
类目[WOS]: Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology
摘要: In China, mechanical collection of cyanoblooms followed by soil-based treatments has been widely used as emergency strategies in many eutrophicated freshwaters. This study was to evaluate both efficiencies and potential risks of typical soil-based technologies. Results from this study indicated that over 90% of cyanobacterial biomass and 96% of dissolved microcystins (MCs) could be restrained in soils via three-level systems, which were much better than single-level systems. High concentrations of MCs, ranged from 65 to 276 ng g(-1) and from 2.12 to 6.6 ng g(-1), were found in soils around treatment systems and croplands, respectively. In the soil solutions, MCs ranged from 0.35 to 2.0 mu g L-1, showing a potentially high leaching risk. In the samples from shallow groundwater near the treatment systems, MC concentrations were detected as high as 1.2 mu g L-1. Moreover, bioaccumulations of MCs varied between 22 and 365 mu g kg(-1), and 19-222 mu g kg(-1) were found in 13 kinds of crops and 7 kinds of wild grass, respectively. Our results indicated for the first time that current soil-based technologies were effective but could pose potential environmental, ecological, and public health risks. Further improvements of these technologies were also proposed based on our findings.
英文摘要: In China, mechanical collection of cyanoblooms followed by soil-based treatments has been widely used as emergency strategies in many eutrophicated freshwaters. This study was to evaluate both efficiencies and potential risks of typical soil-based technologies. Results from this study indicated that over 90% of cyanobacterial biomass and 96% of dissolved microcystins (MCs) could be restrained in soils via three-level systems, which were much better than single-level systems. High concentrations of MCs, ranged from 65 to 276 ng g(-1) and from 2.12 to 6.6 ng g(-1), were found in soils around treatment systems and croplands, respectively. In the soil solutions, MCs ranged from 0.35 to 2.0 mu g L-1, showing a potentially high leaching risk. In the samples from shallow groundwater near the treatment systems, MC concentrations were detected as high as 1.2 mu g L-1. Moreover, bioaccumulations of MCs varied between 22 and 365 mu g kg(-1), and 19-222 mu g kg(-1) were found in 13 kinds of crops and 7 kinds of wild grass, respectively. Our results indicated for the first time that current soil-based technologies were effective but could pose potential environmental, ecological, and public health risks. Further improvements of these technologies were also proposed based on our findings.
关键词[WOS]: RAPE BRASSICA-NAPUS ; RICE ORYZA-SATIVA ; MICROCYSTIN-LR ; WATER-TREATMENT ; MC-LR ; DEGRADATION ; TOXINS ; IRRIGATION ; EXPOSURE ; GROWTH
语种: 英语
WOS记录号: WOS:000312432200043
ISSN号: 0013-936X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19358
Appears in Collections:藻类生物学及应用研究中心_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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China
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