摘要
应用光电直读光谱法测定了不锈钢(CD4MCu)中碳、镍、铬、铜及钼5种元素。通过下述三项措施提高了方法的准确度和精密度:共存元素的干扰校正;增加制作各元素的标准工作曲线时所用的标准样品数,用了两套标准共13块光谱分析用标准样品;选择样块上合适部位作为光谱激发点。上述5种元素的测量范围(质量分数)依次为0.02%～0.35%,3.50%～28.0%,6.50%～32.0%,0.05%～5.0%及0.05%～4.0%。对方法的精密度做了试验,测得相对标准偏差(n=11)为碳4.8%,镍、铬、钼0.4%,铜2.3%。应用此方法分析了5个不锈钢(CD4MCu)样品,所测得数据与用GB标准中化学法所测得的结果完全一致。
Five elements（i.e.,C,Ni,Cr,Cu and Mo） in stainless steel（CD4MCu） were determined by photoelectric direct-reading atomic emission spectrometry.Accuracy and precision of the method were improved by correction of interferences of co-existing elements,increasing number of standard samples used in preparation of standard working curves for the 5 elements（13 standard samples were taken in this method）,and selecting proper sites on the sample cubes for excitation.Ranges of determination（w%） for the 5 elements were as follows： carbon： 0.02%-0.35%;nickel： 3.50%-28.0%;chromium： 6.50%-32.0%;copper： 0.05%-5.0%;molybdenum： 0.05%-4.0%.Precision was tested and values of RSD′s（n=11） found were 4.8%（for C）,0.4%（for Ni,Cr and Mo） and 2.3%（for Cu）.Five samples of stainless steel（CD4MCu） were analyzed by the present method,giving results in consistency with those obtained by the chemical method given in GB standards.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2012年第1期68-71,75,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
重庆市自然科学基金项目(CSTC-2006BB7415)
关键词
直读光谱法
CD4MCu不锈钢
碳
镍
铬
铜
钼
Direct-reading atomic emission spectrometry
Stainless steel（CD4MCu）
Carbon
Nickel
Chromium
Copper
Molybdenum
