Separation and analysis and detection methods of BDP in polycarbonate plastics

The invention discloses a separation method and a quantitative analysis method of BDP in polycarbonate plastics, comprising the following steps of (1) a dissolution step, dissolving the polycarbonate plastics containing BDP into an organic solvent, stirring until fully dissolving, so as to obtain a polymer solution; (2) a sulfonation step, providing a sulfonated reagent, and obtaining a solution containing sulfonated BDP through a sulfonation process; (3) a separation step, providing solvent water, adding the solvent water into the sulfonated BDP solution, stirring and standing, and collecting the water phase; (4) adopting GC-MS, HPLC, FT-IR for performing a detection analysis on the sulfonated BDP.