| 硫氰酸盐光度法测定低合金钢中钼的测量不确定度评定 |
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| 引用本文： | 李正权.硫氰酸盐光度法测定低合金钢中钼的测量不确定度评定[J].化学分析计量,2011,20(3):15-18. |
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| 作者姓名： | 李正权 |
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| 作者单位： | 贵州航天精工制造有限公司检测中心,遵义,563006 |
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| 摘 要： | 用硫氰酸盐分光光度法测定低合金钢中钼的含量,对测定过程中的不确定分量进行了分析和评定.测量不确定度主要来源于试料称量、标准溶液、校准曲线拟合、玻璃仪器的使用及测量重复性.当钼的含量为0.181%时,其扩展不确定度为0.0064%(k=2).
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| 关 键 词： | 低合金钢 钼 分光光度法 不确定度 |
UNCERTAINTY EVALUATION OF DETERMINATION OF MOLYBDENUM IN LOW ALLOY STEEL BY THIOCYANATE SPECTROPHOTOMETRY |
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| Li Zhengquan.UNCERTAINTY EVALUATION OF DETERMINATION OF MOLYBDENUM IN LOW ALLOY STEEL BY THIOCYANATE SPECTROPHOTOMETRY[J].Chemical Analysis And Meterage,2011,20(3):15-18. |
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| Authors: | Li Zhengquan |
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| Institution: | Li Zhengquan (Guizhou Aerospace Precision Manufacturing Co.Ltd.,Test Center,Zunyi 563006,China) |
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| Abstract: | Molybdenum content in low alloy steel was determined by thiocyanate spectrophotometric.The uncertainty components were analyzed and evaluated.The main sources of uncertainty were the mass of sample,the preparation of standard solution,the fitting of calibration curve,the application of glass containers and the repeatability of measurement.The expanded uncertainty was 0.006 4%(k=2) as molybdenum content was 0.181%. |
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| Keywords: | low-alloy steel molybdenum spectrophotometry uncertainty |
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