| 原子吸收法测定水样中铅含量的测量不确定度评定 |
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| 引用本文： | 梁作光,王大方,邵理瑾,张静.原子吸收法测定水样中铅含量的测量不确定度评定[J].现代科学仪器,2009(3):80-82. |
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| 作者姓名： | 梁作光 王大方 邵理瑾 张静 |
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| 作者单位： | 江苏省赣榆县环境监测站,赣榆,222100 |
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| 摘 要： | 根据GB/T7475-1987,使用原子吸收光度法测定水质样品中铅的含量,按照JJF1059-1999《测量不确定度评定与表示》的要求对测定结果进行不确定度评定。分析测定过程中不确定度来源,计算各不确定度分量,求出合成不确定度和扩展不确定度,给出测定结果报告。当样品铅含量为1.31 mg/L时,测量结果的扩展不确定度为0.05 mg/L,k=2。
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| 关 键 词： | 原子吸收法 水质样品 铅 不确定度 |
Evaluation of Uncertainty Measurement of the Lead Content in Water Samples by AAS |
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| Liang Zuo-guang,Wang Da-fang,Shao Li-jin,Zhang Jing.Evaluation of Uncertainty Measurement of the Lead Content in Water Samples by AAS[J].Modern Scientific Instruments,2009(3):80-82. |
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| Authors: | Liang Zuo-guang Wang Da-fang Shao Li-jin Zhang Jing |
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| Affiliation: | (Ganyu Environmental Monitoring Station, Ganyu Jiangsu 222100,China) |
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| Abstract: | According to GB/T7475-1987,the lead content in water samples was determined by atomic absorption spectrophotometry, and the uncertainty of the determination result was evaluated on the requirement of （（Evaluation and Expression of Uncertainty in Measurement）） （JJF1059-1999）. Analyzing the sources of uncertainty in the entire course of the determination and calculating each component of uncertainty, the combined uncertainty and expanded uncertainty were obtained, and the determination result of the copper content was also given. While the lead content in detected samples is 1.31 mg/L, the extend uncertainty of the determination result was 0.05 mg/L, k=2. |
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| Keywords: | Atomic absorption spectrometry Water samples Lead Uncertainty |
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