| 硝基芳烃类对斜生栅列藻的毒性及中毒症状 |
| 摘要点击 1242 全文点击 1371 投稿时间：1994-06-30 |
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| 中文关键词 藻类阻碍生长实验 斜生栅列藻 EC50 中毒症状 |
| 英文关键词 algal inhibition test nitroaromaticcompounds Scenedesmus deiquus EC50 toxic symptoms |
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| 中文摘要 |
| 藻类实验是水生态毒理学研究中的主要方法。通过OECD标准藻类阻碍生长实验,得到25种典型硝基芳烃化合物对斜生栅列藻(Scenedesmus obliquus)的48h半数有效抑制浓度EC50值。其毒性由高到低的顺序为:二硝基氯苯>二硝基苯>二硝基苯胺>二氯硝基苯=二硝基甲苯>硝基溴苯=硝基氯苯>硝基甲苯=硝基苯甲醚=硝基苯酚>硝基苯胺>硝基苯。同时在光学显微镜下详细观察到斜生栅列藻的中毒症状:① 似亲孢子释放受阻。② 质壁分离。③ 细胞核和细胞器解体;④ 原生质体解体。 |
| 英文摘要 |
| By using an OECD standard method for algalgrowth inhibition test, the toxicities(48 h,EC50)of 25 nitroaromatic compounds to Scenedesmus obliquus were determined. their toxicities ranked in a decreasing order were:dinitrochlorobenzene > dinitrobenzene > dinitroaniline> dichloronitrobenzene=dinitrotoluene > nitrobromobenzene=nitrochlorobenzene > nitrotoluene= methoxynitrobenzene=nitrophenol > nitroaniline > nitrobenzene. The toxicities of the compound to the algae varied depending on the concentrations and kinds of the compounds. Under the microscope (400 times),4 kinds of toxic symptoms were observed, including the inhibitionto the filial spore release;the separation of protoplasm form wall of cell; the disintegration of nucleus and organs; and the destruction of protoplast. The results show that the algae growth inhibition test would. have a prospect of wide application in water quality monitoring and pollution control. |
