| 流动注射-分光光度法测定水中铬的不确定度 |
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| 引用本文： | 史小云,王素珍.流动注射-分光光度法测定水中铬的不确定度[J].石化技术与应用,2011,29(6):542-545. |
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| 作者姓名： | 史小云 王素珍 |
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| 作者单位： | 中国石油兰州化工研究中心,甘肃兰州,730060 |
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| 摘 要： | 采用流动注射-分光光度法测定水中总铬质量浓度ρ(Cr)]的不确定度,分析了测量过程中不确定度的来源,通过测量结果验证了相对不确定度的合理性。结果表明,该法的合成不确定度为0.006 5 mg/L,扩展不确定度为0.013 0 mg/L。
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| 关 键 词： | 流动注射-分光光度法 总铬质量浓度 相对不确定度 |
Uncertainty in determination of chromium in water by flow injection-spectrophotometry |
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| Shi Xiaoyun,Wang Suzhen.Uncertainty in determination of chromium in water by flow injection-spectrophotometry[J].Petrochemical Technology & Application,2011,29(6):542-545. |
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| Authors: | Shi Xiaoyun Wang Suzhen |
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| Affiliation: | Shi Xiaoyun,Wang Suzhen(Lanzhou Petrochemical Research Center,PetroChina,Lanzhou 730060,China) |
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| Abstract: | Uncertainty of mass concentration of total chromium in water was determined by flow-injection spectrophotometry.The sources of uncertainty in the determination were analyzed.The relative uncertainty was proved to be reasonable by measurement results.The results showed that the standard uncertainty was 0.0065mg/L,the expanded uncertainty was 0.0130mg/L. |
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| Keywords: | flow injection-spectrophotometry mass concentration of total chromium relative uncertainty |
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