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Questions and Answers
Interferences in AAS can only cause positive errors in quantitative analysis.
Interferences in AAS can only cause positive errors in quantitative analysis.
False
The main cause of background absorption in AAS is the presence of undissociated molecules of the matrix that have broad band absorption spectra.
The main cause of background absorption in AAS is the presence of undissociated molecules of the matrix that have broad band absorption spectra.
True
Spectral interferences in AAS are caused by the presence of another atomic absorption line or a molecular absorbance band close to the spectral line of the element of interest.
Spectral interferences in AAS are caused by the presence of another atomic absorption line or a molecular absorbance band close to the spectral line of the element of interest.
True
Nonspectral interferences in AAS include chemical interference and ionization interference.
Nonspectral interferences in AAS include chemical interference and ionization interference.
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Spectral interferences in AAS can be overcome by choosing an alternate analytical wavelength or removing the interfering element from the sample.
Spectral interferences in AAS can be overcome by choosing an alternate analytical wavelength or removing the interfering element from the sample.
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Study Notes
Interferences in Atomic Absorption Spectroscopy (AAS)
- Interferences can only cause positive errors in AAS quantitative analysis.
- Background absorption is a major interference, often caused by undissociated matrix molecules with broad absorption spectra.
- Spectral interferences happen when another atomic line or a molecular band is close to the analyte line.
- Nonspectral interferences include chemical and ionization interferences.
- Spectral interferences can be overcome by choosing a different analytical wavelength or removing the interfering element from the sample.
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Description
Test your knowledge about the interferences in Atomic Absorption Spectroscopy (AAS) and their impact on quantitative analysis. Learn about the types of interferences and how they can affect the signal from the analyte in the sample.
