Study on Antioxidant Enzyme of Brocarded Carp as Biomarkers of 2,4-DNT Pollution in Water

• DOI: 10.4028/www.scientific.net/amr.113-116.2171
• Publication Date: 2010-06-07T12:31:05Z
• Authors: Hong Yan Shen; Lei Yang; Guo Xia Zhang; Jing Liang Yang
• Keywords: Environmental Pollution; Ecotoxicity; Fresh water fish

In order to investigate ecotoxicity effect of 2,4-dinitrotoluene (2,4-DNT) freshwater fish(Brocarded carp), the acute toxicity test and sub-lethal expriment were conducted in lab. The show that 96h LC50 value 2,4-DNT Brocarded carp is 19.67 mg/L. Its rating moderately toxic fish. Based on result test, fish was exposed different concentrations (1/2LC50, 1/4LC50, 1/16LC50, 1/256LC50, surface water standard concentration) killed at 3, 7, 10 14 day after exposure. activities Superoxide Dismutase (SOD) Catalase (CAT) liver tissue analyzed. results indicated SOD CAT inhibited from third all treatment groups post-exposure, they lower than those control group (p＜0.01). stable during 14-days. had same changing trend unstable under pollution stress. enzyme more sensitive demonstrate Carp might be promising biomarker exposure Therefore it suggested couple index could used as nitroaromatics compounds, when their pollutions affected living beings aquatic environment.