摘要
为揭示浑河重金属污染的潜在生态风险,分析测定了浑河野生鲫鱼体内重金属的残留水平以及肝和鳃组织中金属硫蛋白基因表达。对鱼体各组织中Cr、Cd、Pb、Cu和Zn含量的分析结果显示,各组织重金属含量的排序为肠>肝>鳃>肌肉,且Zn含量最高(17.49～176.01mg·kg-1,以湿体质量计算),Cd含量最低(N.D.～0.57mg·kg-1,以湿体质量计算)。均值综合污染指数评价结果显示,浑河野生鲫鱼受到重金属的轻微污染,且从上游至下游呈现逐渐升高的趋势,其中,Cr、Pb和Zn对均值综合污染指数贡献较大。利用实时定量PCR方法分析鲫鱼肝组织金属硫蛋白基因表达发现,中、下游鲫鱼肝组织的金属硫蛋白基因表达水平较上游有所升高,且与肌肉组织综合污染指数具有较好相关性(R2=0.71),这表明金属硫蛋白基因可作为监测环境重金属污染的敏感标志物。
Assessing the toxicity and health risk of organic disinfection by-products （DBPs） in drinking water has received wide attention in recent years with the improvement of disinfection technology and the occurrence of a new generation of DBPs. Based on the findings of worldwide studies on toxicity of DBPs,organic DBPs were classified systematically,and the toxicological methods for testing typical nitrogenous DBPs （N-DBPs） and carbonaceous DB-Ps （C-DBPs） were introduced in details. The questions needed to be solved and the suggestions for solutions were discussed so as to provide a roadmap for further study in this field.
出处
《生态毒理学报》
CAS
CSCD
北大核心
2012年第1期57-64,共8页
Asian Journal of Ecotoxicology
基金
国家水体污染控制与治理科技重大专项(2009ZX07528-03)
