Voltammetric folic acid sensor based on nickel ferrite nanoparticles modified-screen printed graphite electrode: Original scientific paper. J. Electrochem. Sci. Eng. [Internet]. 2022 Nov. 30 [cited 2026 Feb. 27];12(6):1215-24. Available from: https://pub.iapchem.org/ojs/index.php/JESE/article/view/1607