Impact of 17β-Estradiol on Natural Water’s Heterotrophic Nitrifying Bacteria
Impact of 17β-Estradiol on Natural Water’s Heterotrophic Nitrifying Bacteria作者机构：State Key Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing China
出 版 物：《Journal of Geoscience and Environment Protection》 (地球科学和环境保护期刊（英文）)
年 卷 期：2020年第8卷第10期
页 面：230-241页
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
主 题：17β-Estradiol Nitration Heterotrophic Nitrifying Bacteria
摘 要：In this research, bottom water samples were collected from nature water. After cultivating and selecting, bacteria which could use (NH4)2SO4 as the only nitrogen source had been selected. The bacteria were cultivated in BM cultures with 0, 0.1, 1, 10, 100 ng/L 17β-estradiol (E2), and the initial concentration of E2 is the only difference between cultures of each group. BM culture is a kind of bacteria culture with 100 mg/L of NH4-N as only nitrogen source. Every group’s N- NH4+, N- NO3-concentration and OD600 were measured. The result shows that compared with the control group, in which no E2 was added, the growth of heterotrophic nitrifying bacteria had been promoted when the concentration of E2 was in range of 1 - 100 ng/L. In addition, heterotrophic nitrifying bacteria’s growing speed has a positive correlation between the E2’s concentration. However, low concentration of E2 (like 0.1 ng/L), could inhibit the growth of heterotrophic nitrifying bacteria. Considering the impact of E2 on heterotrophic nitrifying bacteria, it is necessary to intensify the detection of E2 in the future.
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