Rahmadianti S, Hendronursito Y. Synthesis of Silica Nanoparticle Made from Lampung Pumice Modified with Sonication Parameters for Size and Purity. j.ris.technol.pencegah. [Internet]. 2023 Dec. 22 [cited 2024 May 9];14(3):33-40. Available from: https://jrtppi.id/index.php/jrtppi/article/view/176