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董继鑫,王晓燕,郑袁明,刘玉荣. 不同土壤类型中外源汞对白符跳(Folsomia candida)的毒性研究[J]. 生态毒理学报, 2014, 9(5): 978-985
不同土壤类型中外源汞对白符跳(Folsomia candida)的毒性研究
Toxicity of Mercury to Springtail Folsomia candida in Typical Chinese Soils
投稿时间:2014-05-14  修订日期:2014-07-21
DOI:10.7524/AJE.1673-5897.20140514004
中文关键词:    中国土壤  白符跳  繁殖毒性  急性毒性
英文关键词:mercury  Chinese soils  Folsomia candida  chronic reproduction toxicity  acute toxicity
基金项目:国家自然科学基金青年基金项目(41201523)
作者单位
董继鑫 1. 首都师范大学资源环境与旅游学院北京 100048 2. 中国科学院生态环境研究中心 城市与区域生态国家重点实验室 北京 100085 
王晓燕 首都师范大学资源环境与旅游学院北京 100048 
郑袁明 中国科学院生态环境研究中心 城市与区域生态国家重点实验室 北京 100085 
刘玉荣 中国科学院生态环境研究中心 城市与区域生态国家重点实验室 北京 100085 
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中文摘要:
      参考国际标准化组织(ISO)颁布的跳虫毒性测试方法 ISO11267,分析了汞(Hg)在我国9种典型土壤中对白符跳(Folsomia candida)的急性毒性及繁殖毒性。发现Hg在不同类型土壤中对白符跳的半数致死浓度(LC50)变化为(0.92~1.94) mg·kg-1,而对白符跳繁殖产生影响的半数效应浓度(EC50)变化范围为(0.98~2.43) mg·kg-1,产生10%影响的浓度(EC10)变化范围为(0.29~1.40) mg·kg-1 。将土壤的主要理化性质(pH、OM、CEC)与Hg对白符跳的EC50进行相关性回归分析,发现土壤CEC与EC50呈显著正相关关系(r=0.8624,p<0.01),随着土壤CEC的增大,Hg的EC50值也趋于升高。因此,土壤CEC可能是导致不同类型土壤中汞对白符跳毒性差异的主要因素。本研究结果可为制定基于我国土壤类型的生态筛选值提供基础参考数据。
           
AuthorAffiliation
Dong Jixin1. College of Resources, Environment and Tourism, Capital Normal University, Beijing 100048, China 2. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Wang XiaoyanCollege of Resources, Environment and Tourism, Capital Normal University, Beijing 100048, China
Zheng YuanmingState Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Liu YurongState Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
英文摘要:
      Acute and chronic reproduction toxicity of mercury (Hg) to springtail Folsomia candida in 9 spiked soils was analyzed according to the methods of International Standardization Organization (ISO) 11267. The results showed that Hg toxicity to F. candida differed in the variety of soils, and LC50 value (50% lethal concentrations) varied from 0.92 mg·kg-1 to 1.94 mg·kg-1. Based on the toxicity test of F. candida reproduction, the 28-day EC50 value (the concentration causing 50% effect) for the Hg was from 0.98 to 2.43 mg·kg-1 while for the 28-day EC10 value (the concentration causing 10% effect) varied from 0.29 to 1.40 mg·kg-1. Stepwise multiple regressions were carried out to determine the relative contribution of some basic soil properties (e.g. pH, organic matter capacity and cation exchange content) to EC50, and a significant positive correlation between soil cation exchange capacity and EC50 was observed (r=0.8624,p<0.01). The EC50 value tended to increase along the elevated soil cation exchange capacity. Therefore, soil cation exchange capacity may be one of most important factors influencing Hg toxicity to F. candida in these types of soil. These ecotoxicity data generated in the current study will provide valuable reference information for the developing of ecological soils screening values in China.
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