作　　者： ; ; ; ;

机构地区： 东华大学环境科学与工程学院

出　　处： 《上海海洋大学学报》 2012年第3期374-381,共8页

摘　　要： 研究了波吉卵囊藻(Oocystis borgei)对Cu2+和Zn2+的耐受力、吸附率和吸附量的作用规律。结果表明:Cu2+和Zn2+对波吉卵囊藻的生长和叶绿素a含量影响显著(P<0.05)。Cu2+和Zn2+含量的升高,对波吉卵囊藻生长的抑制增大,使叶绿素a含量下降;当Cu2+和Zn2+的含量分别小于0.001 mg/L和0.010 mg/L时,对波吉卵囊藻的生长和叶绿素a含量增加有一定的促进作用;Cu2+和Zn2+对波吉卵囊藻生长的96h-EC50分别为0.229 mg/L和17.390 mg/L。Cu2+含量为1.000mg/L和Zn2+含量为50.000 mg/L的组合,对波吉卵囊藻生长的抑制率为103.881%。Cu2+对波吉卵囊藻的毒性大于Zn2+。波吉卵囊藻对Cu2+和Zn2+有较好的吸附效果,当藻细胞含量为2.291×108ind/L时,对Zn2+的吸附率为81.444%;含量为2.891×108ind/L时,对Cu2+的吸附率为52.521%;吸附量分别为9.469 mg/g(5.208×10-9mg/ind)和2.914 mg/g(1.603×10-9mg/ind),对波吉卵囊藻不会产生明显毒性。 The effect of Cu2 ＋ , Zn2 ＋ on the tolerance and adsorption rate of the microalgae Oocystis borgei was studied. Results show that Zn2＋ and Cu2＋ has a significant impact on the growth and the content of chlorophyll a of O. borgei. The growth of the algae was inhibited when the concentrations of Cu2＋ and Zn2＋ increased. However, low concentration （ 〈0. 001 mg/L amd 0. 010 mg/L） of Cu2＋ and Zn2＋ improved the growth rate of O. borgei and the synthesis of chlorophyll a. The 96h-EC50 of Cu2 ＋ and Zn2 ＋ are 0.229 mg/L and 17. 390 mg/L, respectively. The combination of Cu2？ And Zn2＋ has the highest inhibition （103. 881% ） when 1. 000 mg/L of Cu2＋ and 50. 000 mg/L of Zn2＋ are added to the culture medium. The Cu2＋ is more toxic than Zn2＋. The adsorption rate for Zn2＋ is 81. 444% when the cell abundance is 2. 291 × 10^8 ind/L, while that.for Cu2＋ is 52. 521% when the cell abundance is 2. 891 × 10^8 ind/L. This is equivalent to 9. 469 mg/g （5. 208× 10-9 mg/ind） and 2. 914 mg/g （ 1. 603 ×10-9 mg/ind）. No toxic effects are observed at these assimilation rates.

关 键 词： 波吉卵囊藻 耐受力 吸附率

领　　域： [农业科学] [农业科学] [农业科学]