摘要
采用静水法,对凸加夫蛤(Gafrarium tumidum)进行Hg2+、Cd2+的单一和联合急性毒性实验。在单一毒性实验中,直线回归分析法计算结果,Hg2+和Cd2+对凸加夫蛤96h的半致死浓度(LC50)分别为0.945mg.L-1和13.367mg.L-1,安全浓度(SC)分别为0.0095mg·L-1和0.1337mg·L-1,Hg2+的毒性大于Cd2+;联合毒性实验表明,Hg2+和Cd2+对凸加夫蛤的联合毒性效应为相加作用;凸加夫蛤对Hg2+和Cd2+均具有较强的耐受性,容易造成重金属富集。
The single and joint acute toxic effect of Hg2+ and Cd2+ on Gafrarium tumidum was studied with the method of static toxicity test. In the single toxic test, the data of mortality rate and logarithm of concentrations were analyzed with the linear regression analytical approach after 96h treatment. The median lethal concentrations(LC50) of Hg2+ and Cd2+ at 96h to Gafrarium tumidum were 0.945mg·L-1 and 13.367mg·L-1 respectively. And the safe concentrations(SC)of above two heavy metals were 0.0095mg·L-1 and 0.1337mg·L-1, respectively. In consequence, the toxicity of Hg2+ was stronger than the Cd2+. Results of joint toxic test revealed that the joint toxicity of Hg2+ and Cd2+ presented as additive effect. By contrast, the tolerance of Gafrarium tumidum to Hg2+ and Cd2+ were relatively strong. As well, the biological accumulation of Hg2+ and Cd2+ might be strong, so the heavy metals content monitoring of Gafrarium tumidum should be strengthened.
出处
《广东海洋大学学报》
CAS
2014年第1期66-70,共5页
Journal of Guangdong Ocean University
基金
现代农业(贝类)产业体系建设专项资金(NYCYTX-48)
中央级公益性科研院所基本科研业务费专项资金项目(2013TS09)
