低浓度毒物对海洋微藻生长刺激效应的初步研究

Cell growth of Nitzschia closterium and Platymonas subcordiformis was stimulated under 4 and 8μg·L -1 anthrancene stress, respectively. The cell growth of two species was also stimulated under 30mg·L -1 streptomycin stress. The hormesis of marine microalgae cells under low level of anthrancene and streptomycin resulted in low level of free radical and decrease of microorganisms. Furthermore, the hormesis of marine microalgae was also discussed in this paper.

污染防治技术水体低浓度有机毒物去除的新思路

本文综述了当前水体低浓度有机毒物去除的各种新技术。从化学原理着手，对这些技术的机理进行了分析，提出了新的分类方法，并在此基础上，设想了新的可能有应用前景的去除水体中低浓度有机毒物的方法。

链霉素对海洋微藻的毒物刺激效应

实验选用链霉素对六种海洋微藻进行实验 ,发现六种海洋微藻普遍对链霉素具有抗性。其中只有角毛藻和三角褐指藻在实验范围内 (0～ 50 0 mg/ L)测到了 72 h的半抑制浓度 ,EC50 分别为346 mg/ L和 4 4 5mg/ L。其它四种均未测到。而且当链霉素浓度为 30 mg/ L时 ,对六种海洋微藻普遍具有生长刺激效应 ,即毒物刺激效应。