Andayani, I. G. A. S., Retnowati, I., Mariana, B., Ismillayli, N., Ekawanti, A., & Ayunda, R. D. (2026). Optimization of Cryogenic Grinding as a Hair Sample Preparation Technique for Heavy Metal Concentration Analysis. Bioscientist : Jurnal Ilmiah Biologi, 14(2), 706–714. https://doi.org/10.33394/bioscientist.v14i2.18503