摘要
建立了辉光放电质谱仪的校准方法。校准项目包括检测器噪声、分辨率、灵敏度、检出限、示值误差及重复性。经多家实验室的共同试验比对,提出并验证了计量性能指标,对示值误差进行了不确定度评定。其中,检测器噪声不大于1 c/s。在中分辨率模式下,分辨率不小于3500,灵敏度不小于1×10^(9) c/s。在高分辨率模式下,分辨率不小于8000,灵敏度不小于1×10^(8) c/s。检出限不大于7×10^(–7)%。示值误差不大于±20%。重复性不大于10%。该方法为辉光放电质谱仪的计量性能评价提供参考,推动相关计量技术规范的制定。
The calibration method of glow discharge mass spectrometer was established.The calibration items include detector noise,resolution,sensitivity,detection limit,indication error and repeatability.Through the joint test and comparison of several laboratories,the requirements of measurement performance indexes were put forward and verified,and the uncertainty of indication error was evaluated.The detector noise was no more than 1 c/s;at medium resolution mode,the resolution was not less than 3500,and the sensitivity was not less than 1×10^(9) c/s;at high-resolution mode,the resolution was not less than 8000,and the sensitivity was not less than 1×10^(8) c/s.The detection limit shall not be more than 7×10^(–7)%.Indication error shall not be greater than±20%.The repeatability shall not be more than 10%.It provides a reference for the measurement performance evaluation of glow discharge mass spectrometer and promotes the formulation of relevant measurement technical specifications.
作者
毕经亮
王国栋
侯艳霞
廖宇辉
Bi Jingliang;Wang Guodong;Hou Yanxia;Liao Yuhui(NCS Testing Technology CO.,LTD.,Central Iron&Steel Research Institute,Beijing 100081,China)
出处
《化学分析计量》
CAS
2021年第12期74-77,共4页
Chemical Analysis And Meterage
基金
中国钢研科技集团有限公司青年创新专项基金项目(ZNCS133)。
关键词
辉光放电质谱仪
纯铜标准物质
计量性能
不确定度
glow discharge mass spectrometer
pure copper reference materials
metering performance
uncertainty
