The proposed method is based on the inhibitory effect of resorcinol on the reaction of potassium periodate oxidation of pyronine Y in phosphoric acid medium.

• 在磷酸介质中,痕量间苯二酚对高碘酸钾氧化吡咯红Y使其荧光猝灭具有抑制作用,据此建立了动力学荧光法测定痕量间苯二酚的新方法。