两种贝类养殖环境特征污染物的筛选方法研究

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Abstract

Ten kinds of pollutants,Cu,Pb,Cd,Hg,As,Cr,Zn,Petroleum,DDT,and MP were used for luminescent bacteria inhibitory experiments with MicroTox Model 500 blinking bacteria toxicity detector(SDI,USA).An equation was established based on the concentrations of pollutants and relevant luminous intensities,and the EC₅₀,which was defined as relative toxicity coefficient(RT),was also obtained.The smaller the RT was,the stronger the toxicity of pollutant would be.The RT of all pollutants was in the order of DDT>Hg>Cu=Zn>Cd>Cr>Pb=Petroleum>MP>As.Furthermore,RT/BCF ratio was used as an index for final toxicity(absolute toxicity).The smaller it was,the more harmful it would be.The pollutants with low values of RT/BCF should be prior to be detected as a characteristic pollutant in Molluscs.Through analyzing,the absolute toxicity orders of priority detection of characteristic pollutants in farming environment of Sinonovacula constricta and Tegillarca granosa were:for S.constricta,Hg>Cd>Zn>Cu>As>Cr>Pb(Jiaojiang River mouth),Cd>Pb>Cu(Zhoushan coastal waters),and Cu>Zn>Cr>Pb(Changjiang River mouth);for T.granosa,Cd>Pb>Cu (Ningbo Zhoushan coastal waters),and Cu>Cd>Pb(Wenzhou coastal waters).

Key words： Vibrio fischeri relative toxicity coefficient(RT) enrichment coefficients(BCF) characteristic pollutant screening

Received: 25 December 2011

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	Articles by authors
	GE Qi-wei
	XU Yong-jian
	SUN Bin
	DAI Guang-pu

Cite this article:

GE Qi-wei,XU Yong-jian,SUN Bin, et al. Characteristic pollutants selecting method for farming environment of two kind Molluscs[J]. , 2011, 30(6): 613-617.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I6/613

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