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| LA-ICP-MS测定高纯金中铁含量的不确定度评定 |
| The Evaluation of the Uncertainty of Quantitative Determination of Iron in High-purity Gold by LA-ICP-MS |
| 投稿时间：2020-08-15 |
| DOI： |
| 中文关键词: 分析化学 激光剥蚀(LA) 电感耦合等离子体质谱法(ICP-AES) 高纯金 不确定度 |
| 英文关键词: analytical chemistry laser ablation (LA) inductively coupled plasma mass spectrometry (ICP-MS) high-purity gold uncertainty |
| 基金项目:重庆市科研机构绩效激励引导专项项目(cstc2018jxj100003) |
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| 中文摘要: |
| 对激光剥蚀-电感耦合等离子体质谱法(LA-ICP-MS)测定高纯金中铁含量的不确定度进行了评定，对标准物质、工作曲线和测量重复性的各分量的不确定度进行分析与计算，并计算出扩展不确定度。结果表明，测定高纯金中的铁含量为2.349 mg/kg时，不确定度为0.836 mg/kg，不确定度主要来源于标准物质的不确定度。 |
| 英文摘要: |
| The uncertainty of the determination of iron content in high purity gold by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was evaluated. The impacts of major sources of uncertainty were discussed and calculated, such as certified reference material, working curve and measurement repeatability. The results show that the content of iron in high-purity gold is 2.349 mg/kg, and the expanded uncertainty is 0.836 mg/kg. The main source of uncertainty is certified reference material. |
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