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题名: Acute Toxicity of Heavy Metals to Tetrahymena in an In Vitro Experiment and Envelope Damage Study
作者: Zhang, Tian1; Li, Xi1; Lu, Yang1; Wu, Chunyun1; Fang, Tingting1; Liu, Peng1; Zhang, Chaocan2; Liang, Wei3
通讯作者: Li, X (reprint author), Wuhan Univ Technol, Sch Sci, Dept Chem, Wuhan 430070, Peoples R China.
关键词: Metal ; Tetrahymena ; Microcalorimetry ; Toxicity ; Membrane
刊名: BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
发表日期: 2013-07-01
DOI: 10.1007/s00128-013-1004-9
卷: 91, 期:1, 页:62-68
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Tian ; Li, Xi ; Lu, Yang ; Wu, Chunyun ; Fang, Tingting ; Liu, Peng] Wuhan Univ Technol, Sch Sci, Dept Chem, Wuhan 430070, Peoples R China ; [Zhang, Chaocan] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China ; [Liang, Wei] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Major Science and Technology Program for Water Pollution Control and Treatment [2009ZX07106-003]
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
摘要: The toxicity of Cr3+, Cu2+ and Cd2+ to Tetrahymena growth metabolism was studied by microcalorimetry at 28A degrees C, and the growth constant (k), peak time (T) and generation times (T (G)) were calculated. The metal ion concentrations that resulted in 50 % inhibition (IC (50)) of population growth were obtained through the dynamic parameters. The results indicated that the order of toxicity was Cd2+ > Cr3+ > Cu2+. Inductively coupled plasma-atomic emission spectrometry results suggested that the metal ions affected the permeability of the cell membrane. Observations of the Cd-exposed organisms by scanning electron microscopy revealed damage to the cell membrane in the form of an altered surface appearance. The cells suffered serious damage after sufficient acting time. Attenuated total reflection Fourier transform infrared spectra revealed that amide groups and PO2 (-) of the phospholipid phospho-diester, both located in the hydrophobic end of the outer layer of the cell membrane, were most readily affected.
英文摘要: The toxicity of Cr3+, Cu2+ and Cd2+ to Tetrahymena growth metabolism was studied by microcalorimetry at 28A degrees C, and the growth constant (k), peak time (T) and generation times (T (G)) were calculated. The metal ion concentrations that resulted in 50 % inhibition (IC (50)) of population growth were obtained through the dynamic parameters. The results indicated that the order of toxicity was Cd2+ > Cr3+ > Cu2+. Inductively coupled plasma-atomic emission spectrometry results suggested that the metal ions affected the permeability of the cell membrane. Observations of the Cd-exposed organisms by scanning electron microscopy revealed damage to the cell membrane in the form of an altered surface appearance. The cells suffered serious damage after sufficient acting time. Attenuated total reflection Fourier transform infrared spectra revealed that amide groups and PO2 (-) of the phospholipid phospho-diester, both located in the hydrophobic end of the outer layer of the cell membrane, were most readily affected.
关键词[WOS]: ACCUMULATION ; SOILS
语种: 英语
WOS记录号: WOS:000320881100011
ISSN号: 0007-4861
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19598
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.Wuhan Univ Technol, Sch Sci, Dept Chem, Wuhan 430070, Peoples R China
2.Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China

Recommended Citation:
Zhang, Tian; Li, Xi; Lu, Yang; Wu, Chunyun; Fang, Tingting; Liu, Peng; Zhang, Chaocan; Liang, Wei.Acute Toxicity of Heavy Metals to Tetrahymena in an In Vitro Experiment and Envelope Damage Study,BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY,2013,91(1):62-68
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