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根据Ｆｅ（Ⅲ）、Ｍｏ（Ⅵ）对Ｈ２Ｏ２氧化邻氨基酚的催化反应速率不同，结合流动注射停留技术，建立了同时测定Ｆｅ（Ⅲ）、Ｍｏ（Ⅵ）的速差动力学分光光度法．测定铁和钼的线性范围分别为０．１～２．５μｇ／ｍＬ和０．５～１５μｇ／ｍＬ．除Ｗ（Ⅵ）的允许量较小外，其它离子不干扰测定．用本法测定了合成样液中铁和钼含量，结果满意．
According to the different catalytic rates of Fe (Ⅲ) and Mo (Ⅵ) to oxidize o-aminophenol by H2O2, the kinetic-spectrophotometric method for the simultaneous determination of Fe (Ⅲ) and Mo (Ⅵ) The linear range for determination of iron and molybdenum was 0.1-2.5 μg / mL and 0.5-15 μg / mL, respectively. Except for the small amount of W (VI) allowed, other ions do not interfere with the assay. The contents of iron and molybdenum in the sample were determined by this method and the results were satisfactory.