摘要
测定了Cu2+和Ni2+对硝化颗粒污泥的单一毒性,采用析因实验研究了Cu2+和Ni2+混合体系对硝化颗粒污泥的联合毒性.结果表明,Cu2+和Ni2+的2 h半抑制浓度EC50分别为95.23 mg.L-1和26.45 mg.L-1.由析因实验所得的响应曲面模型具有较好的优度(R2为0.975),能够较好地对混合体系的联合毒性进行预测.Cu2+和Ni2混合体系的毒性表现为拮抗作用.
The single toxicity of Cu2＋and Ni2＋to nitrifying granules were determined respectively.The joint toxicity of Cu2＋ and Ni2＋ mixtures were studied by the application of factorial experiments.The results showed that the EC_50 of Cu2＋ and Ni2＋ were 95.23 and 26.45 mg·L-1,respectively.The resultant response surface models were of high qualities reflected by the R2 above 0.95.Furthermore,the prediction of the joint toxicity of Cu2＋ and Ni2＋ mixtures could be well made based on the models obtained.The joint toxic of Cu2＋ and Ni2＋ mixtures showed antagonistic.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2010年第2期139-142,共4页
Journal of Gansu Agricultural University
基金
江苏省社会发展项目(BS2005050)
