| 过氧化氢对两种海洋微藻的毒性效应研究 |
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| 引用本文： | 董正臻,董振芳,丁德文,李青松.过氧化氢对两种海洋微藻的毒性效应研究[J].海洋科学进展,2004,22(3):320-327. |
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| 作者姓名： | 董正臻 董振芳 丁德文 李青松 |
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| 作者单位： | 1. 国家海洋局,第一海洋研究所,山东,青岛,266061
2. 中国海洋大学,环境科学与工程学院,山东,青岛,266003 |
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| 基金项目： | 国家自然科学基金资助项目——渤海典型环境负荷物的迁移、转化过程及环境容量研究(40136020) |
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| 摘 要： | 运用可见分光光度法，研究了不同H2O2浓度和不同作用时间对青岛大扁藻(P.helgolandica var.tsingdaoensis)和新月菱形藻(Nitzschia closterium)的毒性效应，得到了H2O2对两种藻72h的抑制率，并且在同-H2O2浓度条件下，对不同生长期和不同浓度细胞的毒性作用进行了对比。结果表明，低浓度的H2O2对微藻种群增长有微弱的促进作用，随着H2O2浓度的增加，促进作用变为抑制作用，抑制率也由负变正，并且H2O2浓度越大、作用时间越长其毒性作用越大；H2O2浓度相同时，对微藻生长的抑制作用随着细胞浓度的增大而减小，而且对稳定期细胞的抑制作用大于指数期细胞。
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| 关 键 词： | H2O2 微藻 毒性效应 抑制率 |
| 文章编号： | 1671-6647(2004)03-0320-08 |
| 修稿时间： | 2003年5月17日 |
Study on Toxic Effect of Hydrogen Peroxide on Two Species of Marine Microalga |
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| DONG Zheng-zhen,DONG Zhen-fang,DING De-wen,LI Qing-song.Study on Toxic Effect of Hydrogen Peroxide on Two Species of Marine Microalga[J].Advances in Marine Science,2004,22(3):320-327. |
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| Authors: | DONG Zheng-zhen DONG Zhen-fang DING De-wen LI Qing-song |
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| Institution: | DONG Zheng-zhen~1,DONG Zhen-fang~1,DING De-wen~1,LI Qing-song~2 |
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| Abstract: | The visible light spectrophotometry was used to study the toxic effects of H_2O_2 on P.helgolandica var.tsingdaoensis and Nitzsehia closterium for different concentrations and protracted exposure periods, the 72h inhibition rates of H_2O_2 on two species of algae were obtained, and the toxic effects of H_2O_2 on two species of algae of different population densities and in different growth phases under the same H_2O_2 concentration conditions were compared with each other. It is shown from the test results that the H_2O_2of low concentration had slight stimulating effects on the microalgal population growth, the stimulating effect changed to the inhibiting effect with increasing H_2O_2 concentration, and the higher the H_2O_2 concentration and the longer the exposure period, the greater the toxic effect of H_2O_2; under the same H_2O_2 concentration conditions, the inhibiting effect of H_2O_2 on the microalgal growth decreased with increasing population density, and the inhibiting effect of H_2O_2 on the algal cells in the stable phase was greater than that in the exponential phase. |
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| Keywords: | H_2O_2 microalgae toxic effect inhibition rate |
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