铬铁中铬的电感耦合等离子体发射光谱法测定  

Determination of chromium in ferrochromium by inductively coupled plasma optical emission spectrometry

作　　者：鲍惠君[1] 应海松[1] 金献忠[1] 

机构地区：[1]北仑出入境检验检疫局,浙江宁波315800

出　　处：《冶金分析》2013年第5期50-54,共5页Metallurgical Analysis

基　　金：国家质检总局科研项目(2012IK043)资助

摘　　要：提出了一种电感耦合等离子体发射光谱法(ICP-OES)快速测定铬铁中主成分铬含量的方法。采用碳酸钠和过氧化钠在锆坩埚内熔融样品,硫酸浸取熔块,根据采集多条铬谱线数据,以稳定的铬谱线作为分析线,采用漂移校正和标准物质校正技术,有效地解决了铬铁中主成分铬含量的ICP-OES测定。对高碳铬铁、低碳铬铁、微碳铬铁、炭素铬铁的标准物质样品中铬进行测定,测定值和认定值相差均小于0.3%(质量分数),测定结果的相对标准偏差(n=7)在0.13%～0.43%之间。A method was proposed for fast determination of major component chromium in ferrochromium by inductively coupled plasma optical emission spectrometry（ICP-OES）.Sodium carbonate and sodium peroxide were used to melt the chromium iron sample in zirconium crucible and sulfide acid was used for leaching the melt.According to the various chromium lines collected,some stable lines of them were used as analysis line.The ICP-OES determination of major component chromium in ferrochromium was effectively solved by drift correction and standard material correction technology.The certified standard materials including high carbon ferrochromium,low carbon ferrochromium,micro carbon ferrochromium and carbon ferrochromium were analyzed.The difference between the testing value and the certified value was less than 0.3% and the RSD（n=7） was 0.13%-0.43%.

关 键 词：电感耦合等离子体发射光谱法(ICP-OES) 铬铁 主成分 铬 校正技术 

分 类 号：TG115.33[金属学及工艺—物理冶金] O657.31[金属学及工艺—金属学]