“MODIFIED CARBON PASTE ELECTRODE AS A SENSOR FOR POTENTIOMETRIC DETECTION OF NITRATES: DOI: Https: doi.Org 10.17721 1728-2209.2023.1(58).1”. 2023. Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry 58 (1): 5-10. https://chemistry.bulletin.knu.ua/article/view/2054.