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4种重金属离子对海洋三角褐指藻生长影响的研究
张首临^1,2, 刘明星^1,2, 李国基^1,2, 包万友^1,2, 顾宏堪^1,2
1.中国科学院海洋研究所青岛;266071

摘要:

于1993年4月 - 1993年5月以Zn²⁺，Cd²⁺，Pb²⁺，Cu²⁺不同浓度的海水对三角褐指藻进行生长影响的研究。实验表明，Cu²⁺对三角褐指藻生长的毒性最大，其96h EC₅₀为0.017 mg/L。Pb²⁺的毒性最小，其96h EC₅₀为0.468 mg/L。4种重金属离子的毒性顺序是Cu²⁺＞Cd²⁺＞Zn²⁺＞Ph²⁺，除Cd²⁺外，其他3种金属离子对该单细胞藻的生长安全浓度均低于国家海水水质标准。其结果对今后国家修订海水水质标准将提供参考作用。

关键词: 重金属离子三角褐指藻生物毒性

DOI：

分类号:

基金项目:国家自然科学基金资助项目，491762727号

INFLUENCE OF TOXICITY OF HEAVY METAL IONS TO GROWTH OF PHAEODACTYLUM TRICORNUTUM

Zhang Shoulin,Liu Mingxing,Li Guoji,Bao Wanyou,Gu Hongkan

Institute of Oceanology, Academia Sinica, Qingdao 266071

Abstract:

The present study on the toxici effect of Zn, Cd, Pb, Cu ions at different concentrations on growth of Phaeodactylum tricornutum shows that the toxicity is in the order Cu>Cd>Zn>Pb. The EC₅₀ 96h of the four 'metal ions for the Phaeodactylum tricornutum tested were 0.017 mg/L for Cu, 0.120 mg/L for Cd, 0.363mg/L for Zn and 0.468 mg/L for Pb. The safe concentration of Cu, Zn, Pb, for growth of Phaeodactylum tricornutum is lower than that of the marine water quality standard. This result is important for revising the water quality standard.

Key words: Heavy metal ions, Phaeodactylum tricornutum, Biological toxicity

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