| 电子束辐射对铜绿微囊藻藻毒素产生和释放的抑制作用研究 |
| 摘要点击 1454 全文点击 837 投稿时间：2011-06-13 修订日期：2011-11-08 |
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| 中文关键词 电子束 辐照 藻毒素 抑制 降解 |
| 英文关键词 electron beam irradiation microcystin restrain decompose |
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| 中文摘要 |
| 铜绿微囊藻及其所产生的藻毒素严重威胁人类健康和生命安全,给水处理带来很大困难.利用直线加速器产生的电子束对铜绿微囊藻分别进行1、 2、 3、 4和5 kGy的辐射,通过胞内毒素和胞外毒素的变化,分析了电子束辐射对藻细胞毒素产生和释放过程的影响.结果表明,2~5 kGy的辐射使藻细胞叶绿素a含量迅速大幅下降,对胞外毒素的去除率分别为76.9%、 76.2%、 76.2%和97.7%,表明电子束辐射对微囊藻毒素的降解作用.胞内毒素、胞外毒素与叶绿素a浓度之间的相关性拟合进一步证实电子束辐射抑制了胞内毒素的产生. |
| 英文摘要 |
| Microcystin produced by Microcystis aeruginosa often cause person health and safety and affects drinking water treatment. In this study, electron beam generated by an accelerator was applied to irradiate M.aeruginosa by dose of 1, 2, 3, 4 and 5 kGy.The effect of MC production and releasing process was studied by intracellular and extracelluar MC changing. Data indicated that 2-5 kGy irradiation made Chl-a content decrease fast. And removal rate of extracelluar MC by 2-5 kGy irradiation was 76.9%,76.2%,76.2% and 97.7%,which showed high efficiently MC decomposition by radiation. The correlation between Chl-a with intracellular and extacelluar MC content proved that electron beam radiation controlled intracellular MC production efficiently. |
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