M.A. Shihata Ahmed, ELESSAWY A.M., M. Elanwer Alaa, Quantification and Comparison of Opium (Morphine) and Tramadol from Biological Samples "Liquid - Liquid Extraction", Journal of New Developments in Chemistry, Volume 2, Issue 4, 2020, Pages 29-34, ISSN 2377-2549, https://doi.org/10.14302/issn.2377-2549.jndc-20-3413.
(https://openaccesspub.orgjndc/article/1408)
Keywords: Morphine; Tramadol; Extraction; GC-MS.