摘要
采用现有硫酸亚铁铵滴定法测定钒含量的分析方法时,对于铬含量10%以上的样品,铬对钒的测定结果会产生1%～3%的正干扰。有专利报道,采用酒精可以消除其干扰,但效果并不是太理想。因此提出一种用过量的亚硝酸钠消除铬干扰的方法,操作更简单,效果更好。
When using the existing method for measuring Vanadium content by Ammonium Ferrous Sulfate titration,the samples with a Chromium content of 10%or more have a positive interference of 1%to 3%with respect to Vanadium measurement results.There are some patents report that using alcohol can eliminate its interference,but the effect is not satisfactory.This paper proposes a method for eliminating Chromium interference by using excess Sodium Nitrite,with simpler operation and better effect.
作者
冯向琴
FENG Xiangqin(Panzhihua University,Panzhihua 617000,Sichuan,China)
出处
《四川冶金》
CAS
2018年第6期7-9,共3页
Sichuan Metallurgy
关键词
测定钒含量
高铬干扰
消除方法
measuring vanadium content
high chromium interference
method for elimination
