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研究发现，在醋酸介质中痕量苯胺能灵敏地阻抑H2O2和KBrO3氧化二甲苯兰FF褪色的指示反应。通过研究该反应的最佳实验条件及动力学参数，建立了一种测定痕量苯胺类化合物（以苯胺计）的新方法。本方法的测定范围为0．0～48．0μg/L苯胺，检测限低至3.62×10(-6)g／L苯胺，用于废水中苯胺类物质的测定，结果满意。
It was found that trace aniline in acetic acid can sensitively suppress the indicated reaction of FF fading of H2O2 and KBrO3 xylene blue. By means of studying the optimum experimental conditions and kinetic parameters of the reaction, a new method for the determination of trace aniline compounds (based on aniline) was established. The determination range of this method is 0.0 ~ 48.0μg / L aniline, and the detection limit is as low as 3.62 × 10 (-6) g / L aniline for the determination of aniline in waste water with satisfactory results.