| 原子荧光法测定废水中砷的不确定度评定 |
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| 引用本文： | 朱维.原子荧光法测定废水中砷的不确定度评定[J].干旱环境监测,2016(4):185-190. |
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| 作者姓名： | 朱维 |
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| 作者单位： | 中国石化西北油田分公司环境监测站,新疆轮台,841600 |
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| 摘 要： | 以原子荧光法测定油田废水中砷含量为实例,建立数学模型,分析和识别在分析过程中的不确定度来源,对测量中不确定度的各个分量进行了分步计算及合成,计算出测定结果的扩展不确定度0.74μg/L。通过计算和分析,结果表明,标准工作曲线拟合和方法回收率是原子荧光法测定油田废水中砷含量的不确定度的主要因素。
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| 关 键 词： | 原子荧光法 砷 不确定度 |
Uncertainty Evaluation on Arsenic Determination in Wastewater by Using AFS Method |
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| Abstract: | By using atomic fluorescence method to determine arsenic content in wastewater of oil field ,established a mathemat-ical model,analysed and identified the sources of uncertainty in the process of analysis ,calculated and synthesized the meas-urement uncertainty of the various components by steps ,then calculated the expanded uncertainty of the determination results was 0.74μg/L.The calculation and analysis results showed that the standard working curve fitting and method recovery rate is the main factor influenced the uncertainty in determination of arsenic in waste water by atomic fluorescence spectrometry . |
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| Keywords: | atomic fluorescence spectrometry arsenic uncertainty |
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