▎ 摘　　要

NOVELTY - Preparing graphene oxide/prussian blue nano particle composite material comprises (i) dispersing graphene oxide in water to obtain graphene oxide dispersion, (ii) adding potassium ferricyanide and hydrochloric acid solution to graphene oxide dispersion, stirring to obtain reaction mixture, and (iii) placing reaction mixture in a container placed in an oven, reacting, centrifuging, collecting product and drying to obtain graphene oxide/Prussian blue nanoparticle composite material. USE - The material is useful in analyzing and detecting aniline and organic chlorine pesticide (claimed). ADVANTAGE - The material has excellent thermal stability, chemical stability and heat resistance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) surface coating of probe comprising graphene oxide/prussian blue nanoparticle composite material; and (2) preparing solid phase microextraction probe comprising adding pre-treated stainless steel fiber into neutral silicone gel diluent, removing, coating a layer of graphene oxide/prussian blue nanoparticle composite material on the surface, placing in an oven, repeating step (i) and (ii) for many times and then aging under nitrogen atmosphere to obtain solid phase micro extraction probe.