Which of the following is the definition of spectral interference in plasma and

Question

Which of the following is the definition of spectral interference in plasma and flame atomic emission spectrometry? A spectral interference in atomic spectroscopy occurs when a spectral line of an element in the sample matrix overlaps that of the analyte. It is an example of an additive interference. Spectral interference can alter the aspiration, nebulization, desolvation, or volatilization processes. Spectral interference occurs due to the oscillation frequency of fluorescent lights used to illuminate the laboratory workspace. Spectralinterference can occur when easily ionized substances alter the ionization of the analyte.

Explanation / Answer

an interfent that enhances or depress the intensity of analyte, resulting in an incorrect result recorded is called spectral interference.In flame emission spectroscopy the spectral interferences are due to the incomplete isolation of radiation emitted by the analyte from the other radiation detected by the instrument.spectral interferences in flame emission spectrometry occur by radiation emitted by the contaminats ( molecular bands, or atomic lines).This intererence can also occur from the stray or scattered radiation that reach the detector or from indirect effect of contaminants on flame back round.

most commom spectral interferences aue due to molecular emissions from the oxides of other elements in sample.the answer is A

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