Precision of flame atomic absorption measurements of arsenic, cadmium, calcium, copper, iron, magnesium, molybdenum, sodium, and zinc
Precision of flame atomic absorption measurements of arsenic, cadmium, calcium, copper, iron, magnesium, molybdenum, sodium, and zinc
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砷、镉、钙、铜、铁、镁、钼、钠和锌的火焰原子吸收测量精度
DOI：
10.1021/ac50012a017
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
J. Ingle
中科院分区：
文献类型：
--
作者：
N. W. Bower;J. Ingle
改进了原子吸收测量精密度的评价方法，并应用于8种元素。在Varian AA-6分光光度计上的测量表明，不同元素的精密度特性有许多相似之处。例如，分析物吸收闪烁噪声限制了大多数元素在中等波长下的测量精度。在给定吸光度下的测量精度的实际值和测量精度对吸光度的依赖性取决于校准曲线、分析波长、积分时间和所用火焰的类型。
Procedures for evaluating the precision of atomic absorption measurements have been improved and applied to 8 elements. Measurements on a Varian AA-6 spectrophotometer indicate that there are many similarities in the precision characteristics of different elements. For instance, analyte absorption flicker noise limits the measurement precision of most elements at moderate absorbances. The actual value of the measurement precision at a given absorbance and the dependence of measurement precision on absorbance depend upon the calibration curve, the wavelength of analysis, the integration time, and the type of flame employed.