Rohsaita, Amalia, Muhammad Bakhru Thohir, Meilisa Rusdiana Surya Efendi, Windi Pangesti Kusumaning Tiyas, and Marta Citra Nursaida. “Synthesis of Colorimetric Sensor for Cyanide Detection With Iron(III) Chloride Reagent Using Sol Gel Method With Smarthphone Combination”. Hydrogen: Jurnal Kependidikan Kimia 12, no. 3 (June 28, 2024): 474–486. Accessed August 18, 2025. https://e-journal3.undikma.ac.id/index.php/hydrogen/article/view/11887.