摘要
试样用过氧化钠熔融后酸化的方法处理,样品中的铬、硅、磷、锰元素,经高温熔融后,都已经全部成高价状态,用酸调节至不同的酸度后,用硫酸亚铁铵直接滴定法分析铬,钼蓝光度法测定硅和磷,以过硫酸铵银盐氧化光度法测定锰。通过控制测定的酸度,各元素线性良好,测得铬、硅、锰、磷的相对标准差分别小于0.24%、1.46%、1.64%、2.95%。该法操作简便、快捷,缩短了分析周期。
The sample is used molten sodium oxide, subsequently be acidified, after the samples are high temperatures melt, chromium, silicon, phosphorus, manganese have all the high-priced state, with acid adjust to different acidity, direct titrate chromium by sulfuric acid ferrous ammonium, determine silicon and phosphorus by molybdenum blue spectrophotometric, and determine manganese by ammonium persutfate silver spectrophotometric determination.
出处
《冶金标准化与质量》
2008年第2期20-23,共4页
Metallurgical Standardization & Quality
关键词
高碳铬铁
氮化铬铁
过氧化钠熔融
酸化
滴定法
光度法
high carbon ferrochrome
chromium nitride iron
Na2O2 melting
acidification
titration
spectrophotometry
