摘要
通过实验室模拟培养试验,研究了稀土元素钐(Sm)和钇(Y)对小球藻(Chlorellaellipsoidea)生长的影响。结果表明,低浓度稀土元素在试验初期对小球藻的生长略有刺激作用,但随着处理浓度的提高和处理时间的延长,小球藻的生长繁殖明显受到抑制;当Y浓度达25mg·L-1、Sm浓度达45mg·L-1时,小球藻生长基本停止;Y对小球藻的毒性要较Sm略大。
Effects of rare-earth elements Sm and Y on growth of Chlorella ellipsoidea were studied by simulated test in laboratory. The results showed that lower concentration of rare-earth elements stimulated slightly the growth of Chlorella ellipsoidea, but inhibited its generation apparently as treated concentrations of the elements increased and time prolonged. While the concentration of Y and Sm approached 25 mg·L-1 and 45 mg·L-1, Chlorella ellipsoidea stagnated growth and tended to die. It has been also found that the toxicity of Y was slightly higher than that of Sm.
出处
《农业环境保护》
CSCD
北大核心
2001年第6期398-400,404,共4页
Agro-Environmental Protection
基金
浙江省自然科学基金资助项目(编号296053)
