https://www.eurekaunima.com/index.php/fista <p><em>Jurnal FisTa: Fisika dan Terapannya</em> was founded in 2020 to provide an academic publication forum for students, lecturers, and researchers in the field of Physics and Applied Physics to publish and disseminate their scientific research findings. The journal publishes articles in various areas of physics and its applications, such as Theoretical Physics, Computational Physics, Materials Physics, Nanomaterials and Characterization, Soft Matter Physics, Colloid Physics, Geophysics, Astronomy, Instrumentation Physics, Electronics, and other relevant topics related to physics and applied physics. <em>Jurnal FisTa: Fisika dan Terapannya</em> has been nationally accredited at the <strong>SINTA 5</strong> level, valid from Volume 3 Number 1 (2022) to Volume 7 Number 2 (2026). The journal is managed by the Physics Study Program, Faculty of Mathematics, Natural Sciences, and Earth Sciences, Universitas Negeri Manado, and is registered under <a href="https://portal.issn.org/resource/ISSN/2747-1691#" target="_blank" rel="noopener"><strong>eISSN 2747-1691</strong></a>.</p> Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado en-US Jurnal FisTa Fisika dan Terapannya 2747-1691 https://www.eurekaunima.com/index.php/fista/article/view/702 <p><em>This study examines the potential of magnetic susceptibility as an indicator for monitoring heavy metal concentrations in the sediments of Lake Tondano. The research aims to analyze the magnetic susceptibility characteristics of the sediments and determine the concentrations of heavy metals. Sediment samples were collected at 30 different sampling sites in Lake Tondano. Magnetic susceptibility values were measured with Bartington Susceptibility Meter MS2B, while heavy metal concentrations were analyzed using X-ray Fluorescence (XRF). Data were analyzed descriptively based on the obtained magnetic susceptibility values and heavy metal concentrations. The magnetic susceptibility values obtained for Lake Tondano sediments varied between (44.4–4800.2) × 10⁻⁸ m³/kg, indicating the possible presence of the magnetic mineral hematite. Heavy metals identified in the sediments include manganese, iron, lead, and zinc.</em></p> Sayenne Givenshe Pungus Vistarani Arini Tiwow Armstrong Sompotan Copyright (c) 2026 Sayenne Givenshe Pungus, Vistarani Arini Tiwow, Armstrong Sompotan https://creativecommons.org/licenses/by-nc-sa/4.0 2026-10-31 2026-10-31 7 2 75 82 10.67006/fista.v7i2.702