七种重金属离子及其相互作用下对等鞭藻(Isochrysis galbana Parke)3011生长的影响

GROWTH RESPONSE OF ISOCHRYSIS GALBANA 3011 TO SEVEN KINDS OF HEAVY METALS

本文主要就七种重金属离子对等鞭藻3011生长的影响进行了探讨。实验中分别用1,3,5,7 ppm四种浓度实验发现重金属离子对藻生长的毒害作用顺序是Cu>Cr、Cd>Zn>Ni>Pb。Pb^(2+)对等鞭藻3011生长有利而Cu^(2+)却有致命的毒性。双因子作用下,Pb^(2+)、Ni^(2+)可降低其他重金属离子的毒性,例如Cr^(2+)、Cd^(2+)。总的来说,无论是单因子还是双因子联合作用下,对等鞭藻3011的生长都有抑制作用。

This paper studies the effects of seven kinds of heavy metals on the growth of Isochrysis galbana 3011. Total concentrations of l,3,5,7,ppm were used in the experiments. It is found that the inhibitory sequence is, Cu, Cr, Cd, Zn, Ni and Pb. Pb^(2+) is especially favourable for the growth while Cu is lethal. Antagonist interactions are obvious for most pairs. Pb^(2+) and Ni^(2+) can reduce the inhibitory effects of the other metals such as Cd^(2+) and Cr^(2+). In general, both singly and in dual combinations, most heavy metals inhibit the growth of Isochrysis galbana 3011.