方法对比
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| 标准加标法× | 原子吸收光谱法× | |
|---|---|---|
| 领域 | 分析化学 | 分析化学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1920s | 1955 |
| 提出者≠ | Analytical chemistry practice | Alan Walsh |
| 类型≠ | matrix-compensating calibration technique | elemental analysis technique |
| 开创性文献≠ | Harris, D. C. (2010). Quantitative Chemical Analysis (8th ed.). Freeman. ISBN: 978-1429218153 | Walsh, A. (1955). The application of atomic absorption spectra to chemical analysis. Spectrochimica Acta, 7, 108–117. DOI ↗ |
| 别名≠ | spiking method, known-addition method, matrix matching | AAS, flame AAS, graphite furnace AAS, GFAAS |
| 相关 | 5 | 5 |
| 摘要≠ | The standard addition method is a quantitative analytical technique that determines the concentration of an unknown analyte by measuring the response before and after adding a known quantity of the analyte (a standard) to the sample itself. This approach compensates for matrix effects and interference from other sample components, making it invaluable when analyzing complex matrices (biological fluids, environmental samples, geological materials) where the sample composition profoundly affects the measured signal. The standard addition method is widely recognized in analytical chemistry as a primary quantification strategy when external calibration is compromised by matrix variability. | Atomic absorption spectroscopy is an analytical technique that measures the concentration of metal elements by detecting the absorption of light by ground-state metal atoms in the gaseous state. Invented by Alan Walsh in 1955, it rapidly became the standard method for trace metal analysis in environmental, clinical, agricultural, and industrial samples. Atomic absorption spectroscopy's sensitivity, selectivity, and simplicity make it indispensable for monitoring toxic metals, nutritional minerals, and elements in complex matrices. |
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