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[1]董丽华,李亚男,常素云,等.沉积物中重金属的形态分析及风险评价[J].天津大学学报(自然科学版),2009,(12):1112-1117.
 DONG Li-hua,LI Ya-nan,CHANG Su-yun,et al.Fraction Distribution and Risk Assessment of Heavy Metals in Sediments[J].Journal of Tianjin University,2009,(12):1112-1117.
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沉积物中重金属的形态分析及风险评价()
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《天津大学学报(自然科学版)》[ISSN:0493-2137/CN:12-1127/N]

卷:
期数:
2009年12
页码:
1112-1117
栏目:
环境科学与工程
出版日期:
2009-12-15

文章信息/Info

Title:
Fraction Distribution and Risk Assessment of Heavy Metals in Sediments
文章编号:
0493-2137(2009)12-1112-06
作者:
董丽华1李亚男1常素云1杨幼安2刘 华3
1. 天津大学环境科学与工程学院,天津 300072; 2. 93756 部队,天津 300131;3. 天津市环境保护科学研究院,天津 300191
Author(s):
DONG Li-hua 1LI Ya-nan 1CHANG Su-yun 1YANG You-an 2LIU Hua 3
1. School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China; 2.The People’s Liberation Army 93756,Tianjin 300131,China; 3.Tianjin Academy of Environmental Sciences,Tianjin 300191,China
关键词:
重金属风险评价准则可利用性平均沉积物质量基准系数法生物毒性
Keywords:
heavy metalrisk assessment codeavailabilitymean sediment quality guideline quotientbiological toxicity
分类号:
TU992.0
文献标志码:
A
摘要:
在对各种金属进行形态分析的基础上,采用风险评价准则(RAC)和平均沉积物质量基准系数法(SQG-Q),对沉积物中重金属的污染程度和生态风险进行了评价.按照RAC 准则,Cd 的有效态质量分数大于50%,对环境构成非常高的风险;Ni 次之,超过30%,对环境构成了高风险;Zn 对环境构成中等程度的风险;Pb 和Cu 对环境的危害均处于低风险状态.采用SQG-Q 法,其SQG 系数为7.4,远远大于1,表明该区域呈现出非常高的潜在不利生物毒性效应.应用 PEL/TEL准则对单一重金属的生物毒性进行判断,表明这几种金属的潜在生物毒性很大,不利生物效应将频繁发生.
Abstract:
Based on fraction distribution analysis of various metals,metal contamination and ecological risk of heavy metals in the sediment have been assessed with risk assessment code(RAC)and mean sediment quality guideline quotient(SQG-Q) in this study. According to the RAC,more than 50% carbonate and exchangeable mass fraction of Cd is of very high risk to the environment;Ni takes second place and is of high risk. For Zn,a medium RAC value has been found. With less than 10% carbonate and exchangeable fractions,Pb and Cu pose low risk to the environment. The SQG index,calculated with SQG-Q, is 7.4,which is far more than 1,indicating that the sediment has very high potential for biological toxicity effect. Assessment of biological toxicity with PEL/TEL guideline shows that all these metals have great potential for biological toxicity and the adverse effects will frequently occur.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2008-10-09;修回日期:2009-04-14.
基金项目:国家重点基础研究发展计划(973 计划)资助项目(2007CB407306).
作者简介:董丽华(1980— ),女,博士研究生.
通讯作者:董丽华,lemon_tju@sohu.com.
更新日期/Last Update: