环境工程学报2017，Vol.11Issue(11)：5897-5902,6.DOI:10.12030/j.cjee.201703146
含17β-雌二醇饮用水氯化消毒前后水质生物毒性的变化
Variations of potential biological toxicity of drinking water containing 17β-estradiol before and after chlorine disinfection
摘要
Abstract
17β-estradiol (E2),which is frequently exposed to drinking water,was selected as the research object,and the changes of the acute toxicity of drinking water containing E2 before and after chlorination were investigated.The results of the acute toxicity test showed that under the single exposure conditions of different concentrations of E2 (0,2,4,8,16 mg · L-1),the growth inhibition rate of Chlorella vulgaris showed obviously dose effect relationship,that was with the increase in the exposure concentration of E2,the growth inhibition rate of Chlorella vulgaris increased correspondingly.Under the condition of high chlorine dosage (E2 and chlorine molar ratio of 1 ∶ 2 and 1 ∶ 5),the growth inhibition rate of water samples to Chlorella vulgaris was higher than that before chlorination,but under the condition of low chlorine dosage (the molar ratio of E2 and chlorine were 4 ∶ 1 and 1 ∶ 1),the growth inhibition rate of water samples to Chlorella vulgaris was lower than that before chlorination.This showed that lower chlorine dosage could reduce the acute toxicity of water quality.The enzyme activity tests showed that neither the SOD activity,CAT activity nor the MDA content had significantly upward trend with the exposure of E2 or the chlorine oxidation,which indicated that E2 before and after chlorination would not have a significant impact on the enzyme activity of Chlorella vulgaris.关键词
17β-雌二醇/氯化消毒/生物毒性/小球藻/酶活性Key words
17β-estradiol/chlorine disinfection/biological toxicity/Chlorella vulgaris/enzyme activity分类
资源环境引用本文复制引用
孙凯,马世沅,李史智,张立秋..含17β-雌二醇饮用水氯化消毒前后水质生物毒性的变化[J].环境工程学报,2017,11(11):5897-5902,6.基金项目
国家自然科学基金面上项目资助(51178046) （51178046）
