Irawan, C., Yuliana, E., Solihat, I., Ningsih, D. P., Virgiyanti, S., Setyawati, S. R. and Tohir, M. (2026) “Development and Validation of a Flame Atomic Absorption Spectrometry Method for Determining Cobalt in Mineral Premix for Animal Feed”, Helium: Journal of Science and Applied Chemistry, 6(1), pp. 49–57. doi: 10.33751/helium.v6i1.24.