哈尔滨地区野生黄鼠脑组织中重金属含量检测

目的检测野生环境中黄鼠脑组织重金属铅、砷、汞含量。方法解剖分离捕获的哈尔滨道里、香坊2区13~24月龄野生黄鼠大脑组织,将大脑皮层和其他部分分离,应用原子荧光光度计检测大脑皮层组织内铅、砷、汞含量。结果 道里区野生黄鼠脑组织中的重金属铅、砷、汞含量分别为(49.4±32.5)、(46.7±28.5)、(4.271±1.786)μg/kg;香坊区野生黄鼠脑组织中重金属铅、砷、汞含量分别为(90.1±45.0)、(23.0±18.0)、(4.740±0.952)μg/kg;2区野生黄鼠脑组织内铅、汞含量差异无统计学意义(P>0.05);与香坊区比较,道里区野生黄鼠脑组织中砷含量较高,差异有统计学意义(P<0.05)。结论 哈尔滨地区野生黄鼠脑内可检出重金属铅、砷、汞,其负荷对环境重金属污染具有指示作用。

Concentrations of heavy metals in brain tissues of Spermophilus dauricus in Harbin region

Objective To detect concentrations of heavy metals such as Pb,As,and Hg in brain tissues of Spermophilus dauricus.Methods Spermophilus dauricus of thirteen to twenty-two months old were captured in Daoli and Xiangfang district of Harbin municipality and their cerebral cortex tisues were collected.Pb,As,and Hg in the cerebral cortex tissues were detected with atomic fluorescence spectrometer.Results The concentration of Pb,As,and Hg in the brain tissues of Spermorphilus dauricus from Daoli was 49.4±32.5,47.6±28.5,and 4.3±1.8 μg/kg and that of from Xiangfang district was 90.1±45.0,23.0±18.0,and 4.7±0.9 μg/kg,respectively.There were no significant differences in the concentrations of Pb,Hg between the Spermophilus danricus from different districts (P>0.05),but the concentrations of As in the Spermophilus dauricus from Daoli was significantly higher than that of from Xiangf and district (P<0.05).Conclusion Pb,As and Hg could be detected in the brain tissues of Spermophilus dauricus,which indicate the level of heavy metal contimination of the environment.