Rahmadianti, S., & Hendronursito, Y. (2023). Synthesis of Silica Nanoparticle Made from Lampung Pumice Modified with Sonication Parameters for Size and Purity. Jurnal Riset Teknologi Pencegahan Pencemaran Industri, 14(3), 33–40. https://doi.org/10.21771/jrtppi.2023.v14.no3.p33-40