International Journal of Environmental Science and Development

Abstract—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 in different cultures with different concentration of 17β-estradiol (E2) were cultivated, and every group’s concentration of N-NH₄ ⁺, N-NO₃ ^- and OD600 were measured. The result shows that compare 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 to E2 in the future.

Index Terms—17β-estradiol, nitration, heterotrophic nitrifying bacteria.

The authors are with Beijing Normal University, Beijing, China (e-mail: 201811180152@mail.bnu.edu.cn, 201811180150@mail.bnu.edu.cn, zengwh@bnu.edu.cn, henryzjo@bnu.edu.cn).

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Cite: Ziyi Dong, Changhao Xiao, Weihua Zeng, and Jinbo Zhao, "Impact of 17β-Estradiol on Natural Water’s Heterotrophic Nitrifying Bacteria," International Journal of Environmental Science and Development vol. 12, no. 1, pp. 17-22, 2021.

Copyright © 2021 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).