Elena Efremenko is a professor in the Faculty of Chemistry at Lomonosov Moscow State University, (Moscow, Russia_. A doctor of biological sciences, her research interests focus on soil, agricultural pesticides, hexahistidine-containing organophosphorus hydrolase, chlorpyrifos biodegradation, Dursban, organophosphorus and organochlorine compounds, polluted soil, lg-mgo, and soil stabilization.