当前位置: 首页 > 文章 > ICP-AES测定香菇中镉含量的不确定度评定 食品科学 2007,28 (12) 376-378
Position: Home > Articles > Evaluation of Uncertainty in Determination of Cadmium in Dried Mushroom by ICP-AES FOOD SCIENCE 2007,28 (12) 376-378

ICP-AES测定香菇中镉含量的不确定度评定

作  者:
戴骐
单  位:
浙江出入境检验检疫局
关键词:
ICP-AES法;香菇;镉含量;不确定度
摘  要:
建立了电感耦合等离子体发射光谱(ICP-AES)测定香菇中镉含量过程的相应数学模型,对数学模型中各个参数进行不确定度来源分析,分别对A类不确定度或B类不确定度进行了评定。按国际通用方法对各不确定度分量合成和扩展,得到该方法的不确定度评定。结果表明:标准溶液的配制、标准曲线拟合线性方程及样品溶液的定容是不确定度的主要来源。
译  名:
Evaluation of Uncertainty in Determination of Cadmium in Dried Mushroom by ICP-AES
作  者:
DAI Qi (Zhejiang Entry-Exit Inspection and Quarantine Bureau, Hangzhou 310012, China)
关键词:
ICP-AES;dried mushroom;cadmium;uncertainty
摘  要:
A mathematic model for evaluating the uncertainty of the determination procedure for Cadmium in dried mushroom by ICP-AES was established. The uncertainty sources for each of the parameters in the model were analyzed. The uncertainties of type A (based on the calculation of the statistical distribution of the determination results) or type B (based on the estimation by experience and the probability distribution of other information) were evaluated. According to the international general method, the component uncertainties were synthesized and extended respectively to obtain the uncertainty evaluation. The results showed that the preparation of standard solutions, the fitted linear regression equation for the calibration curve and the volume of sample solution are the main sources of uncertainties.

相似文章

计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 1

所属期刊

推荐期刊