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2012年 第6卷 第4期

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《环境科学与工程前沿（英文）》 >> 2012年 第6卷 第4期 doi: 10.1007/s11783-012-0427-6

Assessment of toxicity of two nitroaromatic compounds in the freshwater fish

1. College of Water Science, Beijing Normal University, Beijing 100875, China; 2. School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 3. Nanjing Institute of Environmental Sciences, SEPA, Nanjing 210042, China

发布日期： 2012-08-01
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This study was conducted to evaluate the toxicological response of -nitrotoluene and -nitroaniline to the key fish species, . A freshwater fish bioassay based on the 96 h was used to estimate the single and joint toxicity of the two chemicals. The toxicity of -nitrotoluene was greater than that of -nitroaniline based on 96 h values of 40.74 mg·L and 48.99 mg·L , respectively. Both compounds had moderate toxicity toward , and this toxicity increased with the exposure duration and concentration. Binary mixtures of the compounds were more toxic than the individual compounds at 96 h, and they acted upon partial addition. When the exposure time was longer, the toxicity increased for mixtures of compounds with the same concentration or toxicity. The results of this study suggest that exposure to a combination of these chemicals would result in a higher environmental risk in aquatic systems than exposure to either compound alone. Further research is needed to investigate the combined effects and sublethal toxicity of -nitrotoluene and -nitroaniline, since they are both still used in China.

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