摘要
在硫磷酸介质中，以硫酸亚铁铵为滴定剂，Ｎ－苯代邻氨基苯甲酸为指示剂，不加催化剂直接用过硫酸铵氧化铬（Ⅲ），测定钢铁中铬。方法简便、经济，应用于各种钢铁中铬的测定，结果满意。
In the medium of sulfuric acid and phosphoric acid, Cr(Ⅲ)is oxygenated to be Cr(Ⅲ) by ammonium peroxydisulfate with out catalyst,Cr(Ⅲ) is titrated by ammonium ferrous sulfate with indicator N-phenylanthanilic acid.This simple,feasible and economical means has been employed in determination of kinds of steel.
出处
《广西化工》
1997年第3期48-50,共3页
Guangxi Chemical Industry
关键词
铬
钢铁
过硫酸铵
氧化法
chromium, steel, ammonium peroxydisulfate, oxygenation
