▎ 摘　　要

NOVELTY - Removing arsenic in hydrofluoric acid involves adding graphene nano sheet in the sulfuric acid-nitric acid mixed solution. The mixture is dispersed and stirred. The stirred mixture is heated for 6-12 hours. The mixture is filtered, and then rinsed with de-ionized water; to obtain oxidized graphene nano sheet. Dispersant and ferrous sulfate are added into ethanol solution, respectively stirring to completely dissolve, obtaining mixed solution. The oxidized graphene nano sheet is added into mixed solution. The mixture is ultrasonically dispersed for 2-6 hours. The mixture is dried at 50-60 degrees C after filtering and washing with absolute ethanol to obtain the modified graphene oxide. The obtain the modified graphene oxide sheet is added to the arsenic-containing hydrofluoric acid. The product is sealed and stirred for 1-24 hours. The product is filtered. USE - Method for removing arsenic in hydrofluoric acid. ADVANTAGE - The method enables to remove arsenic in hydrofluoric acid in a simple, safe and easy manner.