Chaplenko A, Monogarova O, Oskolok K. X-Ray Fluorescence Determination of Trace Elements in Vitamin-Mineral Complexes and Medicinal Herbs Using Chemically Modified Polyurethane Foam Sorbents. Iraqi Journal of Pharmaceutical Sciences [Internet]. 2018 Dec. 5 [cited 2024 Nov. 5];27(2):1-6. Available from: https://bijps.uobaghdad.edu.iq/index.php/bijps/article/view/762