摘要
采用top-down技术的控制图法(现行标准方法)、稳健统计-迭代法和质控-灰色评定法评估了实验室内应用电感耦合等离子体-发射光谱法测定不锈钢中镍的测量不确定度。对于镍含量为9.1%的质控样品,三种方法计算的实验室内扩展不确定度均为0.12%,k=2,方法间无显著性差异。
The uncertainty for determination of nickel in stainless steel by inductively coupled plasma optical emission spec- trometry method was evaluated using quality control charting （one of the current standard methods）, robust statistics-itera- tion method and quality control-grey evaluation method based on ＇top-down＇ technique. For the quality control sample with 9.1% content of nickel, the measurement uncertainty evaluated by the three methods has better consistency with the expanded uncertainty of 0.12%, k=2.
出处
《福建分析测试》
CAS
2017年第1期25-32,共8页
Fujian Analysis & Testing
关键词
top-down技术
不确定度
控制图
稳健统计-迭代法
质控-灰色评定法
ICP-OES
不锈钢
镍
＇ top- down＇ technique
uncertainty
quality control charting
robust statistics-iteration method
quality con- trol-grey evaluation method
ICP-OES
stainless steel
nickel
