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吡咯红Y使荧光猝灭有制作用,据此建立了动力学荧光法测定痕量间苯二酚的新方法。