Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks

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	Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks
	Chen, Wei 1; Jia, Yunlu 1,2; Li, Enhua 3; Zhao, Shuang 1,2; Zhou, Qichao 1,2; Liu, Liming 1; Song, Lirong 1
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2012-12-18
卷号	46 期号:24 页码:13370-13376
关键词	RAPE BRASSICA-NAPUS RICE ORYZA-SATIVA MICROCYSTIN-LR WATER-TREATMENT MC-LR DEGRADATION TOXINS IRRIGATION EXPOSURE GROWTH
ISSN号	0013-936X
通讯作者	Chen, W (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
中文摘要	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.
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.
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]	Engineering, Environmental ; Environmental Sciences
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
关键词[WOS]	RAPE BRASSICA-NAPUS ; RICE ORYZA-SATIVA ; MICROCYSTIN-LR ; WATER-TREATMENT ; MC-LR ; DEGRADATION ; TOXINS ; IRRIGATION ; EXPOSURE ; GROWTH
收录类别	SCI
资助信息	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]
语种	英语
WOS记录号	WOS:000312432200043
公开日期	2013-10-31
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19358]
专题	水生生物研究所_藻类生物学及应用研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Chen, Wei,Jia, Yunlu,Li, Enhua,et al. Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2012,46(24):13370-13376.
APA	Chen, Wei.,Jia, Yunlu.,Li, Enhua.,Zhao, Shuang.,Zhou, Qichao.,...&Song, Lirong.(2012).Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks.ENVIRONMENTAL SCIENCE & TECHNOLOGY,46(24),13370-13376.
MLA	Chen, Wei,et al."Soil-Based Treatments of Mechanically Collected Cyanobacterial Blooms from Lake Taihu: Efficiencies and Potential Risks".ENVIRONMENTAL SCIENCE & TECHNOLOGY 46.24(2012):13370-13376.