Determination of acetaminophen and theophylline in drug samples by electrochemical method using Fe/MCM-41 modified electrode: Original scientific paper. J. Electrochem. Sci. Eng. [Internet]. 2026 Feb. 23 [cited 2026 Jul. 6];16. Available from: https://pub.iapchem.org/ojs/index.php/JESE/article/view/3001