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火焰原子吸收光谱法测定岩矿中金含量的测量不确定度评定

Chemical Engineer(2009)

Cited 21|Views12
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Abstract
采用《测量不确定度评定与表示指南》,以火焰原子吸收光谱法测定岩石矿样中的金含量为例,对测量结果进行不确定度评定。分析了不确定度的重要来源,包括样品制备,标准工作溶液,工作曲线拟合,试液定容体积及测量重复性等引入的不确定度分量组成。当金平均含量为2.98×10-6±0.36×10-6(k=2),评定其扩展不确定度为0.36×10-6。
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Key words
rock and mineral,determination,gold,flame atomic absorption spectrometry,uncertainty
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