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利用微量热法研究Cd2+和Cu2+对嗜热四膜虫(Tetrahymena thermophila)的毒性效应
TOXIC EFFECTS OF Cd2+ AND Cu2+ ON TETRAHYMENA THERMOPHILA BY MICROCALORIMETRY

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陈小娟 1   沈韫芬 1   刘义 2   冯伟松 1   缪炜 1  
文摘 利用微量热法研究Cd2+和Cu2+对嗜热四膜虫BF5 (Tetrahymena thermophila BF5)生长代谢毒性效应,结果表明: ①低浓度的Cd2 + (0~0.4 mg L-1)和Cu2+(0~10 mg L-1)对四膜虫的生长有促进作用,而高浓度的Cd2 +(0.8~3.2 mg L-1)和Cu2+(20~200 mg L-1)则产生抑制作用;②Cd2+和Cu2+的半抑制浓度IC50分别为2.04 mg/L和155.5 mg/L;③联合毒性为协同作用;④微量热法所得Cd2+和Cu2+单独作用时的IC10分别为0.96 mg/L和19.9 mg/L,高于种类损伤法结果;⑤微量热法所得Cd2+和Cu2+单独作用时的IC10均高于II级饮用水水质标准.而Cd2+和Cu2+间的协同作用使Cd2+的IC10降低为0.31 mg/L,高于水质标准;Cu2+的IC10降低为1.16 mg/L,与水质标准相近.总之,微量热法不仅是一种快速评价污染物毒性效应的新方法,而且可用于相关的环境毒理学理论研究.
其他语种文摘 The toxic effects of Cd2+ and Cu2+ along and combined with Tetrahymena ihcrmophila BF5 were studied by microcal-orimetry. The results showed that;;?low concentrations of Cd2+ (0 -0.4 mg L ) and Cu"+ (0-10 mg L ) promoted the growth of T. thermophila BF5 , while high concentrations of Cd22+(0. 8 -3. 2 nig L~' ) and Cu2t (20 -200 mg L2+ ) inhibited ils growth;(2)tli(J half inhibition concentrations 1C5(I of Cd2 * and Cu3' were 2.04 mg/L and 155.5 mg/L, respectively ;C|)llit' joint toxicity of them was synergism ;(4)lhe IC,,, of Cd2+ and Cu2 ' obtained by niicrofulorimetry were 0. 96 mg/L and 19. 9 mg/ L, ami they were both higher than ECH) by laxonotnic loss;(5jtlie ICIO of Cd2+ and Cu2+ obtained by ink'roealorinietry were both higher than water quality standards, but synergism of Cd2+and Cu2+ made their IC,,> lower. The ICIU of Cd2+ became 0. 31 mg/ L, which was higher than drinking water quality standards II, and that of Cu2+ was 1. 16 mg/L, which was close In waler quali-ty standards. In a word, microcalorimelry was not only a new fast response technique lor evaluating ihe toxic effects ol pollu-tants, but also useful to the corresponding environmental lexicological theoretic studies.
来源 应用与环境生物学报 ,2004,10(6):745-749 【核心库】
关键词 微量热 ; Cd2+ ; Cu2+ ; 嗜热四膜虫 ; 联合毒性 ; 种类损伤法
地址

1. 中国科学院水生生物研究所, 武汉, 430072  

2. 武汉大学化学与分子科学学院, 武汉, 430072

语种 中文
文献类型 研究性论文
ISSN 1006-687X
学科 环境科学基础理论
基金 国家自然科学基金项目 ;  中国科学院知识创新工程重要方向项目
文献收藏号 CSCD:1809410

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引证文献 7

1 黄卫红 六氯苯对原生动物四膜虫的生物毒性实验室研究 环境科学与技术,2006,29(12):11-13
被引 3

2 张蔚霞 用嗜热四膜虫模型研究铁系纳米材料对环境生物体的安全效应 化学世界,2007,48(6):341-344
被引 4

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