| 电感耦合-等离子体质谱法和石墨炉-原子吸收光谱法分析地球化学样品中的金结果及不确定度对比 |
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| 引用本文： | 王佳翰,冯俊,张亚峰.电感耦合-等离子体质谱法和石墨炉-原子吸收光谱法分析地球化学样品中的金结果及不确定度对比[J].分析仪器,2017(4). |
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| 作者姓名： | 王佳翰 冯俊 张亚峰 |
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| 作者单位： | 中国人民武装警察部队黄金第九支队,海口,571127 |
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| 摘 要： | 采用电感耦合等离子体质谱法和石墨炉原子吸收光谱法分别测定地球化学样品中的金含量。从测试过程的随机效应、标准曲线拟合、标准溶液、定容体积、称样质量、样品前处理等过程引入的不确定度作了系统分析,建立了结果不确定度评估数学模型,探讨了其测定结果不确定度,并对评估结果进行比较。通过对GAu-11标准物质进行分析,ICP-MS法和GF-AAS法相对标准合成不确定度分别为0.0439、0.0508;扩展不确定度分别为0.9780、1.10(k=2),结果证明ICP-MS法测得金结果的可靠性略优于GF-AAS法。
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| 关 键 词： | 金 电感耦合-等离子体质谱法 石墨炉-原子吸收光谱法 不确定度 |
Comparative study of uncertainty evaluation for determination of Au content in geochemical samples by ICP-MS and GF-AAS. |
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| Wang Jiahan,Feng Jun,Zhang Yafeng.Comparative study of uncertainty evaluation for determination of Au content in geochemical samples by ICP-MS and GF-AAS.[J].Analytical Instrumentation,2017(4). |
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| Authors: | Wang Jiahan Feng Jun Zhang Yafeng |
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| Abstract: | The sources of uncertainty in the measurement process such as random effect, standard curve fitting, standard solution, volume, sample quality and sample pretreatment process were analyzed, and the uncertainty assessment model was established.Based on the analysis of GAu-11,the relative standard synthesis uncertainties were 0.0439 and 0.0508 for ICP-MS and GF-AAS, respectively, the expanded uncertainties were 0.978 and 1.10 ng/mL(k=2) respectively.The result showed that the reliability of ICP-MS was slightly better than GF-AAS. |
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| Keywords: | Au ICP-MS GF-AAS uncertainty |
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