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Position: Home > Articles > Effects of Zn~(2+) and Cr~(6+) Stress to Hydra Acute Toxicity and Soluble Protein Journal of Henan Agricultural Sciences 2013,42 (9) 120-123

Zn~(2+)、Cr~(6+)胁迫对水螅的急性毒理作用及对可溶性蛋白的影响

作  者:
潘林;张艳馥;金忠民
单  位:
齐齐哈尔大学生命科学与农林学院
关键词:
水螅;Zn2+;Cr6+;急性毒性;可溶性蛋白
摘  要:
为探讨Zn2+、Cr6+对水螅的急性毒性作用及其联合毒性作用,采用静水法生物测试,测定了经Zn2+和Cr6+胁迫后水螅体内可溶性蛋白含量的变化。结果表明,Cr6+毒性大于Zn2+。Zn2+和Cr6+对水螅24、48、72、96h的半数致死质量浓度(LC50)分别是1.037 5、0.947 6、0.628 6、0.533 3mg/L和0.594 7、0.475 0、0.264 7、0.121 4mg/L;二者的安全质量浓度分别为0.053 3mg/L、0.012 1mg/L。Zn2+、Cr6+对水螅的联合毒性大于单一毒性,表现为协同作用。随着重金属离子浓度的增高,水螅体内的可溶性蛋白质的含量表现为先上升后下降。
译  名:
Effects of Zn~(2+) and Cr~(6+) Stress to Hydra Acute Toxicity and Soluble Protein
作  者:
PAN Lin;ZHANG Yan-fu;JIN Zhong-min;School of Life Science and Agriculture and Forestry,Qiqihar University;
关键词:
Hydra;;Zn2+;;Cr6+;;acute toxicity;;soluble protein
摘  要:
The acute toxicity and the joint toxicity of Zn2+ and Cr6+ on Hydra(LC50)were studied and the change of soluble protein of Hydraafter stressed by Zn2+ and Cr6+ was determined by the static test method.The results showed that the toxicity sequence of two heavy metals ions to Hydra was Cr6+>Zn2+.The LC50 of 24,48,72and 96h for Zn2+ to Hydra were 1.037 5,0.947 6,0.628 6and 0.533 3mg/L,while for Cr6+,the LC50 were 0.594 7,0.475 0,0.264 7and 0.121 4mg/L,respectively.The safe concentrations of Zn2+and Cr6+were 0.053 3mg/L and 0.012 1mg/L,respectively.The toxicity of combined Zn2+and Cr6+was greater than the individual toxicity,representing a result of the synergetic effect.The soluble protein content of Hydra was increased first and then decreased accompanying with the raised Zn2+ and Cr6+ concentration.

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