Comprehensive toxicity analysis of chromeplating effluents to Photobacterium phosphoreum

DONG Yuying; LEI Bingli; ZHANG Yang; BAO Yajing

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Comprehensive toxicity analysis of chromeplating effluents to Photobacterium phosphoreum

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- Comprehensive toxicity analysis of chromeplating effluents to Photobacterium phosphoreum
- CIESC Journal Issue 11, Pages: 2911-2914(2007)
- 作者机构：
  
  1. 大连民族学院环境工程系
  2. 中国科学院生态环境研究中心环境水化学实验室
- 作者简介：
- 基金信息：
- DOI：
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- Online First：05 November 2007，
  
  Published：05 November 2007
- 稿件说明：
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DONG Yuying, LEI Bingli, ZHANG Yang, et al. Comprehensive toxicity analysis of chromeplating effluents to Photobacterium phosphoreum[J]. CIESC Journal, 2007, (11): 2911-2914.
DOI：

DONG Yuying, LEI Bingli, ZHANG Yang, et al. Comprehensive toxicity analysis of chromeplating effluents to Photobacterium phosphoreum[J]. CIESC Journal, 2007, (11): 2911-2914. DOI：

摘要

通过测定pH值、电导率和COD等主要理化性质，对3种不同工艺段的电镀废水进行了表征。应用发光细菌法测定了废水的生物毒性，并根据水质毒性分级标准进行了评价。结果表明，电镀废水的EC50值与COD和电导率值虽然存在一定的相关性，但仅凭化学方法对理化指标进行监测不能定量反映废水对生物造成的危害，必需将它与生物分析方法相结合。综合评价废水的毒性和理化指标，有益于制定出可靠的废水排放标准。同时结合电导率和化学需氧量（COD）值初步分析了3种电镀废水对发光菌造成毒性的毒物类型，这为进一步研究引起电镀废水毒性的因子鉴别奠定基础。

Abstract

Comprehensive evaluation of effluents is of great importance for environmental impact assessment.In this paper

three kinds of chromeplating effluents were characterized by determining pH

conductivity and COD values.The toxicity of these effluents to Photobacterium phosphoreum was also determined.According to the toxicity category standard

their order of toxicity intensity was obtained.Although there was a correlation between EC50

COD and conductivity to some extent

it was inappropriate to represent quantitatively the damages to organisms only by the physico-chemical properties of the chromeplating effluents.It was indicated that a combination of physico-chemical characterization and comprehensive toxicity analysis could provide the correct information for effluent discharge standards.In this study

causative toxic compound types in three kinds of electroplating effluents were also analyzed preliminarily according to conductivity

COD and EC50 values.It can provide the basis for toxicity identification evaluation of electroplating effluents.

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