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（Ｓｃｅｎｅｄｅｓｍｕｓｏｂｌｉｑｕｕｓ）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。
By using an OECD standard method for algalgrowth inhibition test, the toxicities(48 h,EC50)of 25 nitroaromatic compounds toScenedesmus obliquus were determined. theirtoxicities 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. Underthe microscope (400 times), 4 kinds of toxicsymptoms 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 pollutioncontrol.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第2期7-10,共4页
Environmental Science
基金
国家自然科学基金
关键词
斜生栅列藻
中毒症状
硝基芳烃类
毒性
algal inhibition test, nitroaromaticcompounds,Scenedesmus deiquus, EC_(50), toxic symptoms
