AAS stands for which technique?

AAS stands for which technique?

• A. American Association for Laboratory Accreditation
• B. CDC
• C. Atomic Absorption Spectrometry
• D. American Society for Testing and Materials

Answer: (C)

Atomic Absorption Spectrometry is an analytical technique used to measure how much of a specific element is present by detecting the absorption of light by free atoms in the gas phase. In practice, the sample is atomized in a flame or graphite furnace, and light at a wavelength unique to the element passes through. The atoms absorb part of the light, and the amount absorbed correlates with concentration, allowing precise measurement of metals like lead in environmental or clinical samples. The other options refer to organizations (an accreditation body, a public health agency, and a standards organization), not a measurement method, so they don’t describe a technique.

Atomic Absorption Spectrometry is an analytical technique used to measure how much of a specific element is present by detecting the absorption of light by free atoms in the gas phase. In practice, the sample is atomized in a flame or graphite furnace, and light at a wavelength unique to the element passes through. The atoms absorb part of the light, and the amount absorbed correlates with concentration, allowing precise measurement of metals like lead in environmental or clinical samples. The other options refer to organizations (an accreditation body, a public health agency, and a standards organization), not a measurement method, so they don’t describe a technique.