1. Department of Chemistry, Faculty of Sciences, University of Craiova, Craiova, Romania;
2. Doctoral School of Sciences, University of Craiova, Craiova, Romania;
3. Faculty of Environmental Engineering and Food Science, Valahia University of Targoviste, Targoviște, Romania;
4. Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, Targoviște, Romania;
5. Faculty of Science and Arts, Valahia University of Targoviste, Targoviște, Romania