萘及其衍生物对普通小球藻的毒性效应  

THE TOXIC EFFECTS OF NAPHTHALENE AND ITS DERIVANTS ON CHLORELLA VALGARIS

作　　者：沈国兴[1] 严国安[1] 余新[1] 刘永定[2] 宋立荣[2] 徐立红[2] 

机构地区：[1]武汉大学环境科学与工程系,武汉430072 [2]中国科学院水生生物研究所,武汉430072

出　　处：《水生生物学报》1999年第5期460-468,共9页Acta Hydrobiologica Sinica

基　　金：国家自然科学基金(39870152);淡水生态及生物技术国家重点实验室开放课题基金资助

摘　　要：本文研究了萘及其衍生物(萘、1-萘酚、2-萘酚和1-萘胺)对普通小球藻的生长、叶绿素含量、光合强度和呼吸强度的影响。萘、1-萘酚和1-萘胺在低浓度下能促进普通小球藻的生长,高浓度则抑制藻的生长;2-萘酚在实验浓度下都抑制藻的生长。萘、1-萘酚、2-萘酚和1-萘胺的96hEC_(50)分别为98.06、11.87、13.39和6.95mg/L。萘及其衍生物对叶绿素含量和光合强度的影响比对生长的影响强,而对叶绿素含量的影响又比对光合强度的影响强。可以这样认为:萘及其衍生物对普通小球藻生长的抑制是通过抑制藻叶绿素a的形成,进而降低光合强度实现的。低浓度的萘和1-萘酚增强普通小球藻的呼吸强度,而高浓度则减弱;与此相反,低浓度的2-萘酚对藻的呼吸强度影响不大,高浓度能显著增强;在实验浓度下的1-萘胺使藻呼吸强度明显减弱,但随着时间的推移,呼吸强度出现回升,且高浓度回升较快。In this paper, it was studied that the effects of naphthalene and its derivants ( naphthalene, 1-naphthol, 2-naphthol and 1-naphthylamine) on growth, chlorophyll a content, intensity of photosynthesis and respiration of C. vulgaris. Naphthalene, 1-naphthol and 1-naphthylamine in low concentrations stimulated the growth of Chlorella vulgaris, but these chemicals in higher concentrations inhabited its growth significantly. 2-naphthol inhabited the growth in all concentrations (1 to 40 mg/L) tested. The EC50 of naphthalene, 1-naphthol, 2-naphthol and 1-naphthylamine were 98. 06, 11. 87, 13. 39 and 6. 95mg/L, respectively. The toxic effects of naphthalene and its derivants on chlorophyll a content and intensity of photosynthesis were stronger than those of growth. Naphthalene and 1-naphthol in low concentrations, intensity of respiration of C. vulgaris were of stimulative effects, but at higher concentrations, the intensity reduced. On the contrary, 2-naphthol did not affect intensity of respiration of C. vulgaris ?at low concentrations, the intensity increased significantly. 1-Naphthylamine reduced respiration intensity of C, vulgaris, but then increased slowly.

关 键 词：萘及其衍生物 普通小球藻 毒性 叶绿素 光合强度 呼吸强度 

分 类 号：X173[环境科学与工程—环境科学]