Rahmadianti, Siti, and Yusup Hendronursito. “Synthesis of Silica Nanoparticle Made from Lampung Pumice Modified With Sonication Parameters for Size and Purity”. Jurnal Riset Teknologi Pencegahan Pencemaran Industri 14, no. 3 (December 22, 2023): 33–40. Accessed November 27, 2024. https://jrtppi.id/index.php/jrtppi/article/view/176.