Toxicity of Three Heavy Metal Pollutants of the Pharmaceutical Wastewater to Paramecium Caudatum

Abstract:

In order to provide information for biological monitoring of environmental pollution and help people to develop pharmaceutical wastewater pollutant monitoring and emission standard, in this paper, acute toxicity experiments of three heavy metal pollutants, Zn²⁺,Cd²⁺ and Hg²⁺ existed usually in pharmaceutical wastewater, were done and their 24hr LC₅₀ on the Paramecium were got individually, safety thresholds were calculated. At the same time, impact of different concentration heavy metal ions on population growth curve of Paramecium caudatum were researched. Results indicated that the acute toxicity of Hg²⁺ are the strongest, and the population growth curve changed significantly by three different types under three heavy metal ions pressure.

• Periodical: Advanced Materials Research (Volume 937)
• Pages: 571-577
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.937.571
• Online since: May 2014
• Authors: Zi Lin Gong, Ying Chen*, Yan Yan, Si Ying Pei, Di Wu, Miao Zhang, Qi Wang
• Keywords: Acute Toxicity, Heavy Metal, Paramecium Caudatum, Pharmaceutical Wastewater, Population Growth Curve

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