期刊论文

Acute Toxic Effect of Uranium on Daphnia Magna

中文

核科学与工程

0258-0918

2021

41

4

869-875

10.3969/j.issn.0258-0918.2021.04.029

国家自然科学基金

本校为第一机构

为了初步探讨铀对水生生物的急性毒性效应,以大型溞为研究对象,以溞体活动抑制为毒性观察指标,进行了急性毒性试验。结果表明,各试验组受试体死亡率和铀溶液之间呈现出显著的时间-剂量-效应关系特征,主要表现为随着暴露时间延长和铀浓度增加,试验受试体的死亡率升高,铀对大型溞存在强烈的毒害作用。铀对大型溞的24 h EC_(50)和48 h EC_(50)分别为12.61(11.91~13.43)mg/L和10.95(10.41~11.47)mg/L。通过对比发现铀的不同形态其生物毒性差异明显,难溶于水的U_3O_8生物毒性低于可溶性的UO2(NO_3)_2·6H_2O。

In order to study the acute toxic effects of uranium on aquatic organisms,the acute toxicity test was carried out on daphnia magna,with daphnia magna as the research object and individual activity inhibition as the observation index. The results show that there is a significant time-dose-effect relationship between the mortality of the test subjects and the uranium solution in each test group. With the prolonged exposure time of the test and the increase of uranium concentration,the mortality rate of the test subjects increased,which shows that...