9: Atomic Absorption Spectrometry
- Page ID
- 333362
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- 9.1: Sample Atomization Techniques
- The process of converting an analyte to a free gaseous atom is called atomization. Converting an aqueous analyte into a free atom requires that we strip away the solvent, volatilize the analyte, and, if necessary, dissociate the analyte into free atoms. There are two common atomization methods: flame atomization and electrothermal atomization, although a few elements are atomized using other methods.
- 9.2: Atomic Absorption Instrumentation
- Atomic absorption spectrophotometers use the same single-beam or double-beam optics described earlier in Chapter 7, including a source of radiation, a method for introducing the sample (covered in the previous section), a means for isolating the wavelengths of interest, and a way to measure the amount of light absorbed or emitted.
- 9.3: Interferences in Absorption Spectroscopy
- In describing the optical benches for atomic absorption spectroscopy, we noted the need to modulate the radiation from the source in order to discriminate against emission of radiation from the flame. In this section we consider additional sources of interference and discuss ways to compensate for them.
- 9.4: Atomic Absorption Techniques
- This section provides some details about how samples are prepared for an atomic absorption analysis, details about calibration strategies, and a summary of the method's strengths and limitations.