生态毒理
肖睿洋,禹果,王春霞,王子健.天津地区土壤中遗传毒性物质的分布规律[J].环境科学学报,2005,25(10):1403-1407
天津地区土壤中遗传毒性物质的分布规律
- Distribution of genotoxic substances in soils in Tianjin Area
- 基金项目：国家重点基础研究发展计划(No.2003CB415005);国家自然科学基金(No.40471129)
- 作者
- 单位
- 肖睿洋
- 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085
- 禹果
- 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085
- 王春霞
- 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085
- 王子健
- 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085
- 摘要：利用SOS/umu试验测试了天津地区41个土壤样品有机提取物的遗传毒性,研究了该地区土壤中遗传毒性物质污染水平及区域生态风险的分布规律.结果表明,在所研究区域中,遗传毒性的高风险区主要分布在天津市和塘沽、汉沽两个区.其中,汉沽区土壤有机组分遗传毒性值最高,其次为塘沽区和市区.与有限的文献报道数据相比,天津地区土壤有机组分的遗传毒性较高,且与该地区土壤中多环芳烃浓度的分布规律相似.研究结果表明,遗传毒性的生物效应标记方法可以用于区域生态风险评价,来快速筛选和甄别遗传毒性物质污染的高风险区.
- Abstract：The genotoxicity of a total of 41 surface soil samples from Tianjin Area, Northern China were examined by SOS/umu test for the assessment of regional risks associated with the spatial distribution of genotoxic substances. In the research area, the higher levels of genotoxicity in soil organic extracts were distributed in the city of Tianjin, as well as in nearby Tanggu and Hangu Districts. The genotoxicity in Hangu District was the highest, followed by Tanggu District and urban area of Tianjin. In comparison with the limited data in literature, soils in Tianjin Area were more heavily polluted by genotoxic substances and the geographic distribution of genotoxicity was quite similar to the concentration distribution of polycyclic aromatic hydrocarbons (PAHs). It has been concluded that SOS/umu test could be a useful alternative method for ecological risk assessment and for screening and evaluation of risks in regional scale.
- Key words：Tianjin soil genotoxicity SOS/umu test PAHs
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