Novel fluorescent silicon dioxide nanosphere-anthrax antibody conjugate as well as preparation method and application thereof

The invention discloses a novel fluorescent silicon dioxide nanosphere-anthrax antibody conjugate which is of a fluorescent immunochromatography test strip structure marked by fluorescent silicon dioxide nanospheres taking anthrax as an antigen. The test strip is a sandwich-type sandwich immunosensor taking the fluorescent silicon dioxide nanospheres as a signal substance, and comprises an anthrax coated antibody immobilized on a detection line of a nitrocellulose NC membrane, an anthrax labeled antibody labeled by fluorescent silicon dioxide nanospheres, and an anthrax protective antigen PA respectively connected with the anthrax coated antibody and the anthrax labeled antibody through antigen-antibody interaction. The invention also discloses a preparation method of the novel fluorescent silicon dioxide nanosphere-anthrax antibody conjugate, and the application of the novel fluorescent silicon dioxide nanosphere-anthrax antibody conjugate in preparation of an anthrax detection kit. According to the present