Study on Response Rule of the Microcystis aeruginosa Fluorescence on the Biological Toxicity of HgCI2

• 作者: CUI Jian-sheng LIU Xiao-jing QI Cai-ya
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 铜绿微囊藻 生物毒性 荧光响应 铜绿假单胞菌 质量浓度 荧光强度 光合作用 正相关关系
• 年，卷（期）: 2012,（10）
• 页码范围: 20-22
• 页数: 3页
• 分类号: X524

摘要

[Objective] The research aimed to study response rule of the M. aeruginosa fluorescence on the biological toxicity of HgCl2. [Method] M. aeruginosa as material, fluorescence intensity at its best excitation and emission wavelengths as measured indicator, influence of the HgCl2 at different mass concentrations on fluorescence intensity of the M. aeruginosa was discussed initially. [Result] HgCl2 at different mass concentrations had different influences on M. aeruginosa. HgCl2 at low concentration (0.002-0.004 mg/L)could promote photosynthesis of the M. aeruginosa. It showed as fluorescence value of the algae liquid becoming smaller. 0.010-0.400 mg/L of HgCl2 inhibited photosynthesis of the M. aeruginosa. It showed as fluorescence value of the algae liquid becoming bigger. Moreover, inhibition effect increased as HgCl2 concentration rose, showing a positive correlation between HgCl2 concentration and toxicity (R 2=0.963 5). [Conclusion] The research provided new theoretical basis for quickly measuring water toxicity.