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1.44×10~6L·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。
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 1.44×10~6 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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第8期939-941,共3页
Chinese Journal of Analytical Chemistry
关键词
铁
分光光度法
DAVPM
Iron
Spectrophotometry
Colour reaction
Diantipyrylphenyl ethylenemethane.
