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学科主题: Environmental Sciences & Ecology; Toxicology
题名: ARSENIC SPECIATION AND EFFECT OF ARSENATE INHIBITION IN A MICROCYSTIS AERUGINOSA CULTURE MEDIUM UNDER DIFFERENT PHOSPHATE REGIMES
作者: Guo, Pengran ; Gong, Yan ; Wang, Chang ; Liu, Xi ; Liu, Jiantong
通讯作者: Liu, JT (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China ; guopengran@gmail.com
关键词: Microcystis aeruginosa ; Arsenic speciation ; Phosphate ; Arsenate
刊名: ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
发表日期: 2011
卷: 30, 期:8, 页:1754-1759
收录类别: SCI
部门归属: [Wang, Chang; Liu, Xi; Liu, Jiantong] Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China; [Guo, Pengran; Wang, Chang] China Natl Analyt Ctr Guangzhou, Guangdong Prov Publ Lab Anal & Testing Technol, Guangzhou, Guangdong, Peoples R China; [Gong, Yan] Hubei Acad Agr Sci, Inst Agr Qual Stand & Testing Technol, Wuhan, Peoples R China
资助者: State Key Laboratory of Freshwater Ecology and Biotechnology[2009FBZ09]; National Major Science and Technology Program-Water Body Pollution Control and Remediation[2008ZX07101-007, 2009ZX07102-003]; China Postdoctoral Science Foundation[2010003372]; Science and Technology Planning project of Guangdong Province, China[2010B031000015]
摘要: To assess the ecological impact of arsenic pollution during cyanobacterial blooms, As speciation and cyanobacterial growth in phosphate-modified Microcystis aeruginosa cultures treated with arsenate were investigated under laboratory conditions. Marked growth inhibition was observed when arsenate was added. The inhibition effect of 1 mu M arsenate was lower than that of 10 mu M arsenate. Increasing phosphate supply (0-175 mu M) in the medium decreased the inhibition of As. In the medium, arsenate, arsenite, and dimethylarsenicals (DMA) occurred under phosphate-deprivation (0 mu M) and phosphate-excess (175 mu M) conditions. However, only arsenate and DMA were detected under phosphate-limited (1 mu M) and phosphate-rich (10 mu M) conditions. Moreover, arsenite and DMA concentrations had significantly positive correlation with the biomass production of M. aeruginosa in the existence of phosphate. Arsenic speciation was more significantly affected by phosphate levels than arsenate concentrations. Recovery of total As content in M. aeruginosa culture medium increased with the increasing phosphate supply. The duration of arsenate contamination in the culture of M. aeruginosa had no influence on the variation of As species but affected the concentration of them in the medium under the phosphate-excess condition. This demonstrated that the effect of M. aeruginosa on As speciation was not related to the duration of As contamination under the phosphate-excess condition. Environ. Toxicol. Chem. 2011;30:1754-1759. (C) 2011 SETAC
语种: 英语
WOS记录号: WOS:000293060900004
ISSN号: 0730-7268
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16463
Appears in Collections:水环境工程研究中心_期刊论文

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Guo, Pengran; Gong, Yan; Wang, Chang; Liu, Xi; Liu, Jiantong.ARSENIC SPECIATION AND EFFECT OF ARSENATE INHIBITION IN A MICROCYSTIS AERUGINOSA CULTURE MEDIUM UNDER DIFFERENT PHOSPHATE REGIMES,ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2011,30(8):1754-1759
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