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 |
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基金项目:国家自然科学基金资助项目,491762727号 |
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INFLUENCE OF TOXICITY OF HEAVY METAL IONS TO GROWTH OF PHAEODACTYLUM TRICORNUTUM |
Zhang Shoulin,Liu Mingxing,Li Guoji,Bao Wanyou,Gu Hongkan
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Institute of Oceanology, Academia Sinica, Qingdao 266071
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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 |