用石墨炉原子吸收法测定烟用香精中As、Pb的不确定度评定
TQ657.4; 为了评定用石墨炉原子吸收法测定烟用香精中 As、Pb 的不确定度,建立了其测量不确定度评定的数学模型和因果关系图,确定了其各测量不确定度的分量。结果表明:该测量不确定度的主要来源为样品的重复性和测定的样品浓度; As、Pb 测量结果的标准不确定度分别为0.04、0.02 mg/kg;取包含因子 k =2,在95%的置信水平下, As、Pb 测量结果的扩展不确定度分别为0.08、0.04 mg/kg。...
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| Published in | 江西农业学报 Vol. 27; no. 7; pp. 40 - 43 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
福建中烟工业公司 技术中心,福建 厦门,361021%国家烟草质量监督检验中心,河南 郑州,450001
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-8581 |
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| Summary: | TQ657.4; 为了评定用石墨炉原子吸收法测定烟用香精中 As、Pb 的不确定度,建立了其测量不确定度评定的数学模型和因果关系图,确定了其各测量不确定度的分量。结果表明:该测量不确定度的主要来源为样品的重复性和测定的样品浓度; As、Pb 测量结果的标准不确定度分别为0.04、0.02 mg/kg;取包含因子 k =2,在95%的置信水平下, As、Pb 测量结果的扩展不确定度分别为0.08、0.04 mg/kg。 |
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| Bibliography: | 36-1124/S Graphite furnace atomic absorption spectrometry ; Tobacco flavor; Uncertainty ; Evaluation; As ; Pb LIU Xiu-cai ,ZHANG Ding-fang, HUANG Hui-zhen , LI Xue, ZHU Feng-peng, LIU Ze-chun, HUANG Hua-fa, DENG Qi-xin, XU Han-chun (1. Technology Center, China Tobacco Fujian Industrial Company Limited, Xiamen 361021, China; 2. China National Tobacco Quality Supervision and Test Center, Zhengzhou 450001, China) In order to evaluate the uncertainty in the determination of arsenic (As) and plumbum (Pb) in tobacco flavor by u- sing graphite furnace atomic absorption spectrometry, we set up a new mathematical model and a cause-effect relationship diagram for the evaluation of the measurement uncertainty, and ascertained the components of various measurement uncertainties. The results showed that this measurement uncertainty mainly came from the repeatability and concentration of the tested samples. The standard uncertainty of As and Pb measurement results was 0.04 and 0.02 mg/kg, respectively. Under the conditions of |
| ISSN: | 1001-8581 |