Abstract: Based on the method outlined in GB/T14506.8-2010,this approach employs hydrofluoric acid,perchloric acid,and sulfuric acid to dissolve the sample in a hydrochloric acid medium with ascorbic acid to eliminate the interference caused by reducing iron.Diamantipyrine methane served as the colorant,and the reagent blank was used as a reference.The determination of titanium dioxide at 390 nm or 450 nm is both easy to operate and fast,and its wide range of applicability makes it suitable for a broad range of methods.Furthermore,this method can be applied to the determination of titanium dioxide in a diverse array of geological samples,significantly enhancing work efficiency.This technique is characterized by its simplicity,speed,broad applicability,and ability to analyze a wide range of contents in various geological samples,which greatly improves work efficiency.