INFLUENCE OF Ho3+ IONS FOR THE QUANTITATION OF IRON (Fe) IN 0.1 M HCl SOLUTION USING MICROWAVE PLASMA-ATOMIC EMISSION SPECTROMETRY (MP-AES). MaFE [Internet]. 2019 Oct. 9 [cited 2025 Apr. 7];44(3):109. Available from: https://journals.agh.edu.pl/mafe/article/view/3175