摘要
研究稀土元素镧（Ｌａ）、铈（Ｃｅ）、镨（Ｐｒ）、钕（Ｎｄ）及其混合物对蛋白核小球藻（Ｃｈｌｏｒｅｌｌａｐｙｒｅｎｏｉｄｅｓ）生长的影响。结果表明，低浓度（２ｍｇ／Ｌ）稀土元素对小球藻生长影响不大；随处理浓度的提高（１０—２００ｍｇ／Ｌ），稀土元素对小球藻生长产生明显的抑制作用。各元素对小球藻的毒性顺序（按ＥＣ（５０）计）依次为：Ｎｄ＞Ｃｅ＞Ｐｒ＞Ｌａ＞混合稀土，但毒性差异很小。
It was studied that effects of rare-earth elements (La,Ce, Pr, Nd and their mixture) on growth and reproduction of Chlorella pyrenoides. The results showed that effects of rare-earth elements on growth and reproduction of Chlorella pyrenoides were not apparent under lower concentration (2mg/L), but it was inhibited as the concentration increased; and the toxicity (EC50,96 h.) of rareearth elements on Chlorella pyreaoides was insequence as:Nd>Ce>Pr>La>mixture of them, but little difference.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1996年第2期37-38,63,共3页
Environmental Science
基金
浙江省自然科学基金
关键词
稀土元素
小球藻
生长影响
毒性
rare-earth element, Chlorella pyrenoides, effect on growth and reproduction.
