Fabrication of a sensitive electrochemical sensor based on CuS-modified carbon paste electrode for hydrazine analysis in water samples: Original scientific paper. J. Electrochem. Sci. Eng. [Internet]. 2025 Jul. 23 [cited 2026 Jul. 6];15(6). Available from: https://pub.iapchem.org/ojs/index.php/JESE/article/view/2832