电感耦合等离子体质谱法对车用陶瓷催化转化器中铑测量的不确定度评定  

Uncertainty Evaluation for the Determination of Rh in Vehicle-used Ceramic Catalyst Converter by ICP-MS

作　　者：姚慧[1] 张盼盼[1] 杨惠玲[1] 

机构地区：[1]中国汽车技术研究中心,天津300300

出　　处：《汽车零部件》2017年第5期76-81,共6页Automobile Parts

摘　　要：利用电感耦合等离子体质谱(ICP-MS)法测定车用催化转化器中铑的标准方法,评定相应的测量结果的不确定度。通过对测定过程中不确定度分量来源的分析,计算各不确定度分量,最后计算出合成标准不确定度和扩展不确定度,以测量不确定度的形式对测量结果进行表述。得出:催化器样品中铑含量为(1.968±0.051 0)mg/g,t_(0.95)(12)=2.18。To establish a determination method of Rh in vehicle-used ceramic catalyst converter by inductively coupled plasma-mass spec- trometry （ICP-MS） and evaluate the uncertainty of determination results, a mathematic model was established by analyzing the uncertainty sources from different parts. The final uncertainty degree was calculated by standard uncertainty and extended uncertainty during measurements. The result is： the Rh content in vehicle-used ceramic catalyst converter is determined to be （ 1. 968±0. 051 0） mg/g with a t0.95（12） value of 2. 18.

关 键 词：电感耦合等离子体质谱仪 铑 不确定度评定 

分 类 号：U464.134.4[机械工程—车辆工程]