Sonochemical technology is a technology that involves ultrasonic waves in chemical reactions. In this study. humic acid isolated from peat soil has been successfully modified with magnetite (HA-Fe3O4) using sonochemical technology. Characterization of the physical and chemical properties of HA-Fe3O4 was carried out using FTIR. https://www.markbroyard.com/mega-pick-michigan-state-spartans-secchia-stadium-on-sale-super-sale/