【摘要】 在稀盐酸介质中,在锰（Ⅱ）存在下,沸水浴中加热,铁（Ⅲ）迅速氧化二安替比林苯乙烯甲烷形成一种红色化合物。该化合物最大吸收峰位于波长540nm,摩尔吸光系数为1.44×10⁶L·mol^-1·cm^-1。铁（Ⅲ）浓度在0.04～0.8μg/25ml范围符合比耳定律。方法曾用于天然水中痕量铁（Ⅲ）的测定,结果令人满意。更多还原

【Abstract】 In the presence of dilute hydrochloric acid and Mn（Ⅱ）, Fe（Ⅲ）reacts with diantipyrylphenyl ethylenemethane to form a red compound in 100℃ water baths its mclar, absorptivity is 1.44×10⁶ L.mol^-1. cm^-1 at 540nm. Eeer’s law is obeyed in the range of 0.04～0.8μg Fe（Ⅲ）/25ml. The method has been applied to the determination of trace Fe（Ⅲ）in natural water With reliable results.更多还原