In atomic absorption spectrometry (AAS), what is the primary measurement goal?

In atomic absorption spectrometry (AAS), what is the primary measurement goal?

• A. Qualitative measurement of elements
• B. Determination of moisture content
• C. Quantitative measurement of elements
• D. Measuring pH

Answer: (C)

In atomic absorption spectrometry, the goal is to determine how much of a given element is present in the sample—that is, to obtain a quantitative measure of elemental concentration. The instrument measures how much light at the element’s characteristic wavelength is absorbed by the vaporized atoms. This absorbance is then translated into concentration using a calibration curve built from standards. While you can get a sense of whether an element is present, the defining purpose is to produce numeric concentration values. AAS is not used for moisture content or pH measurements, which are determined by separate methods.

In atomic absorption spectrometry, the goal is to determine how much of a given element is present in the sample—that is, to obtain a quantitative measure of elemental concentration. The instrument measures how much light at the element’s characteristic wavelength is absorbed by the vaporized atoms. This absorbance is then translated into concentration using a calibration curve built from standards. While you can get a sense of whether an element is present, the defining purpose is to produce numeric concentration values. AAS is not used for moisture content or pH measurements, which are determined by separate methods.