AAS法测定铝合金中锰含量测量结果的不确定度评定  

Analysis of The Uncertainty for The Determination of Manganese in Aluminium Alloy by AAS

作　　者：任慧[1] 刘广华[1] 李蓓[1] 

机构地区：[1]中航工业北京航空材料研究院,航空材料检测与评价北京市重点实验室,材料检测与评价航空科技重点实验室,北京100095

出　　处：《现代科学仪器》2017年第1期71-74,80,共5页Modern Scientific Instruments

摘　　要：本文是对原子吸收光谱法测定铝合金中Mn的不确定度进行了分析。阐述了测量结果不确定度主要来源于测量试液中锰的浓度、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，得出影响锰含量测定不确定度的主要因素是测量试液中锰浓度引起的不确定度。The uncertainty for the determination of Mn in aluminium alloy by AAS was analyzed. The sources of the uncertainty resulted from the determination of Mn 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 main factor affecting the uncertainty for the determination of Mn is the uncertainty of Mn concentration in the solution

关 键 词：AAS 铝合金 锰 不确定度 

分 类 号：O657.3[理学—分析化学]