▎ 摘　　要

NOVELTY - The method involves mixing graphene powder, and solvent. A magnetic rod is placed into graphene slurry dispersion solution, and fully stirred. The magnetic substance is collected on the magnetic rod. The magnetic substance is dissolved to obtain the dissolved solution. The component in quantitatively detected in the dissolved solution by using a spectrometer. The measurement of the magnetic substances is realized in the graphene powder. The solvent is the deionized water. The dispersing operation is carried out by a variable frequency dispersion machine equipped with a saw-tooth dispersing disc, and a dispersing container. USE - Method for measuring magnetic substance in graphene powder. ADVANTAGE - The measuring method is combined with high speed dispersion, and ball milling crushing, and an operation is simple, and the flow is simple, without adding auxiliary agent, and organic solvent, which realizes an effective release of magnetic substance, and non-magnetic metal impurity coated in the graphene deionized water, which is good for the magnetic rod to absorb the magnetic foreign matter independently, and improves the stability, and accuracy of the test result.