17α-Ethinylestradiol (EE2): concentrations in the environment and methods for wastewater treatment - an update.

17α-Ethinylestradiol (EE2) is a frequently used drug and an endocrine disruptive substance. Adverse effects on biota have been reported when they are exposed to this substance in the environment. The last review on EE2 in the environment was published in 2014.