]Acute Toxicity of Three Nitrobenzene Compounds Toward Brocarded Carp

SHEN Hong-yan1,2,ZHEN Fang-fang2,SONG Cun-yi1,REN Hong-qiang3(1.The School of Civil and Environmental Engineering,Beijing University of Science and Technology,Beijing 100083,China;2.The College of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;3.School of Environment,Nanjing University,Nanjing 210093,China)

P-NCB;M-DNB;CDNB;acute toxicity;Brocarded Carp;LC50

Acute toxicity of P-NCB,M-DNB and CDNB toward Brocarded Carp was studied with static test method.In the test,Brocarded Carp was chosen as test animal and was exposed to different doses of the three nitrobenzene compounds,and 96 h LC50 was calculated according to lethal rates of the fish.According to the data obtained from the acute tests,acute toxicity of the above chemicals toward Brocarded Carp was 22.13、14.53、0.692 mg·L-1,respectively,with a toxicity sequence for the studied chemicals of CDNB>M-DNB>P-NCB.The safety concentrations of three kinds of nitrobenzenes were 2.213、1.453 and 0.069 2 mg·L-1,respectively.Obviously,the safe concentration of CDNB torword Brocarded Carp was lower than the value of environmental quality standards for surface water.However,the safe concentrations of M-DNB and P-NCB toward Brocarded Carp were higher than that of the standards.