原子吸收光谱法测定铝合金中锌含量测量结果的不确定度评定  

Analysis of the Uncertainty for the Determination of Zinc in Aluminium Alloy by AAS

作　　者：任慧[1] 孙建新[1] 

机构地区：[1]中航工业北京航空材料研究院/中航(试金石)检测科技有限公司/航空材料检测与评价北京市重点实验室,北京100095

出　　处：《现代科学仪器》2013年第1期155-157,共3页Modern Scientific Instruments

摘　　要：通过对原子吸收光谱法测定铝合金中锌的不确定度的系统分析,阐述了测量结果不确定度主要来源于测量试液中锌的浓度、试液定容体积及样品质量产生的不确定度,并对这些分量进行了量化计算,最后计算出合成标准不确定度和扩展不确定度。同时通过评估,得出影响锌含量测定不确定度的主要因素是测量试液中锌浓度引起的不确定度。The uncertainty for the determination of Zn in aluminium alloy was analyzed by AAS.The sources of the uncertainty resulted from the determination of Zn concentration in the solution,the volume of the solution and the weight of the sample were discussed and calculated.At last,the combined standard uncertainty and the expanded uncertainty were reported.At the same time,through evaluation,it was indicated that the leading factor affecting the uncertainty for the determination of Zn is the uncertainty of Zn concentration in the solution.

关 键 词：原子吸收光谱法 铝合金 锌 不确定度 

分 类 号：TG115.33[金属学及工艺—物理冶金]