沉积物中五氯酚对底栖生物的急慢性毒性效应

钟文珏; 张瑜; 韩雨薇; 祝凌燕

doi:10.7524/AJE.1673-5897.20140528001

天津城市生态环境修复与污染防治重点实验室, 教育部环境污染过程与基准重点实验室, 南开大学环境科学与工程学院, 天津 300071

作者简介: 钟文珏(1979-),女,博士,研究方向为水环境质量基准与生态风险评价,E-mail:wenjue07@126.com

通讯作者: 祝凌燕, E-mail: zhuly@nankai.edu.cn

基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07501-003-04)

教育部创新团队(IRT 13024)

高等学校博士学科点专项科研基金(新教师类)(20130031120018)

中央高校基本科研业务费专项资金资助

中图分类号: X171.5

Acute and Chronic Toxic Effects of Pentachlorophenol on the Benthic Organisms in Sediments

Tianjin Key Laboratory of Remediation&Pollution Control for Urban Ecological Environment, Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

Corresponding author: Zhu lingyan, zhuly@nankai.edu.cn

Fund Project:

摘要: 以淡水底栖动物花翅羽摇蚊幼虫和淡水单孔蚓为研究对象,研究了沉积物中五氯酚对底栖生物的急慢性毒性效应。五氯酚对花翅羽摇蚊幼虫96 h及10 d的半数致死浓度(LC₅₀)分别为20.6 mg·kg^-1和12.5 mg·kg^-1,28 d羽化半数抑制浓度(EC₅₀)为0.79 mg·kg^-1。沉积物中五氯酚对花翅羽摇蚊幼虫的羽化具有延滞作用,而且对雌性摇蚊羽化的延滞作用大于雄性,最终导致羽化摇蚊的性别失衡。淡水单孔蚓对五氯酚的耐受力较摇蚊幼虫强。五氯酚对淡水单孔蚓的96 h及14 d的LC₅₀分别为37.6 mg·kg^-1和20.2 mg·kg^-1,对淡水单孔蚓21 d生长抑制的EC₅₀为1.39 mg·kg^-1。研究结果对推导五氯酚沉积物质量基准和进行沉积物生态风险评价提供依据。

Abstract: This study was designed to assess the acute and chronic toxic effects of pentachlorophenol (PCP) on Chironomus kiiensis and Monopylephorus limosus in sediment. For Chironomus kiiensis, the median lethal concentrations (LC₅₀) in 96 h and 10 d tests were 20.6 mg kg^-1 and 12.5 mg kg^-1, and the median effect concentration (EC₅₀) of emergence in 28 d test was 0.79 mg kg^-1. PCP could delay the emergence time of Chironomus kiiensis, especially for female. Meanwhile, PCP could affect the sex ratio of the newly born Chironomus kiiensis. Compared with Chironomus kiiensis, PCP displayed lower toxicity to Monopylephorus limosus. The LC₅₀ of PCP on Monopylephorus limosus in 96 h and 14 d test were 37.6 mg kg^-1 and 20.2 mg kg^-1, respectively. The EC₅₀ of growth inhibition in 21 d test was 1.39 mg kg^-1. The results of this study would provide a basis for deriving the sediment quality criteria and assessing ecological risk of PCP.

Key words:

沉积物中五氯酚对底栖生物的急慢性毒性效应

通讯作者: 祝凌燕, E-mail: zhuly@nankai.edu.cn

作者简介: 钟文珏(1979-),女,博士,研究方向为水环境质量基准与生态风险评价,E-mail:wenjue07@126.com
天津城市生态环境修复与污染防治重点实验室, 教育部环境污染过程与基准重点实验室, 南开大学环境科学与工程学院, 天津 300071

收稿日期: 2014-05-28

基金项目:

国家水体污染控制与治理科技重大专项(2012ZX07501-003-04)

教育部创新团队(IRT 13024)

高等学校博士学科点专项科研基金(新教师类)(20130031120018)

中央高校基本科研业务费专项资金资助

关键词:

Acute and Chronic Toxic Effects of Pentachlorophenol on the Benthic Organisms in Sediments

Corresponding author: Zhu lingyan, zhuly@nankai.edu.cn

Received Date: 2014-05-28

Fund Project:

Keywords:

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