摘要
提出在HCl介质中,以抗坏血酸还原铁 ,残余的抗坏血酸以次甲基蓝为指示剂,硫酸铈氧化,然后在硫 磷混酸介质中,以二苯胺磺酸钠为指示剂,硫酸铈标准溶液滴定铁 。大多数常见离子不干扰铁的测定,氟的干扰可用硼酸消除。本方法简便、快速,用于铁矿中铁的测定,结果满意。
In the medium of hydrochloric acid,iron*# is reduced by ascorbic acid and residual ascorbic acid is oxidated by cerium sulfate with methylene blue as indicatorIron*' is titrated by standard cerium sulfate with sodium diphenylamine sulfonate as indicator in the mixing medium of sulphuric acid and phosphoric acid Most of common ions do not interfere in the determinationInterference by fluoride is eliminated by adding boric acidThe method is simple and rapidIt has been applied to the determination of iron in iron ores with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
2003年第3期57-58,共2页
Metallurgical Analysis
