▎ 摘　　要

NOVELTY - Method of determining rutin in boron-doped graphene-supported gold-gold-gold-platinum alloy shell nanocomposite-modified electrode involves measuring effects of scanning speed on electrochemical behavior of rutin, obtaining equation by linear fitting of reduction peak current value, detecting rutin using differential pulse voltammetry, and determining linear range and detection limit of modified electrode to rutin based on linear relationship between concentration and oxidation peak current value. USE - Method of determining rutin in boron-doped graphene-supported gold-gold-gold-platinum alloy shell nanocomposite-modified electrode (claimed). ADVANTAGE - The method is carried out efficiently and economically with rutin detection limit of 0.3x 10-12M. DETAILED DESCRIPTION - Method of determining rutin in boron-doped graphene-supported gold-gold-gold-platinum alloy shell nanocomposite-modified electrode involves preparing boron-doped graphene was synthesized by hydrothermal method and gold-gold-platinum core-shell nanoparticles by seed growth method, embedding thousands of core-shell nanoparticles in boron-doped graphene lamellar structure by ultrasonic technology, drawing boron-doped graphene into a single layer or layers of lamellar structure, enhancing adhesion of boron-doped point-defective graphene with surface of core-shell nanoparticles, eliminating the defects of easy aggregation of nano-particles and obtaining high-electron-conductive electrode interface modification material based on boron-doped graphene/gold-gold alloy platinum alloy shell nanocomposite, polishing glassy carbon electrode having diameter of 3 mm, with 1 mu m, 0.3 mu m and 0.05 mu m alumina solution on the suede to a mirror and then with 1M nitric acid solution, anhydrous ethanol and secondary water-ultrasonically-cleaning, drying with high purity nitrogen and pipetting 10 mu L of boron-doped graphene-loaded gold-gold-gold-platinum alloy shell nanocomposite on the surface of glassy carbon electrode and obtaining electrochemical sensor based on boron-doped graphene-supported gold-gold-gold-platinum alloy shell nanocomposite, measuring effects of scanning speed on the electrochemical behavior of rutin, obtaining equation by linear fitting of the reduction peak current value shows that the modified electrode is mainly adsorbed and controlled by rutin based on scanning speed and oxidation, detecting rutin using differential pulse voltammetry, determining linear range and detection limit of the modified electrode to rutin based on linear relationship between the concentration and the oxidation peak current value.