▎ 摘　　要

NOVELTY - The method involves utilizing graphene by nanometer ferriferrous and guanine derivatives using chemical bonding and graphite. The graphite alkene material is provided with a single layer graphite layer, where thickness of the single layer graphite layer is less than 50 nm. Diameter of a carbon-coated ferroferric oxide nano-metal particle is 80 nm. Weight ratio of the ferroferric oxide nano-metal particle and carbon is 1 to 50:1. Diazonium guanine is prepared in an ice water bath. Nitrite diazotization is utilized to obtain diazol of guanine. Composite graphite oxide is prepared. USE - Guanine derivative synthesizing method for detecting biological antioxidant (claimed). ADVANTAGE - The method enables preparing derivatives of guanine with super para magnetism and conductive performances, where the derivative has high potential application value and market value. The method enables fixing a lead on an electrode surface by a magnet, so that the time taken for electrode surface modification process is reduced and the electrode surface can be updated at any time, thus achieving clean electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a guanine derivative.