By AAS (Atomic Absorption Spectroscopy), the actual measured attribute is

A. Atomic mass

B. Reflectance

C. Transmittance

D. Absorption

Answer: Option D

Solution(By Examveda Team)

AAS is Atomic Absorption Spectroscopy, which is a technique for measuring the concentrations of metallic elements in different materials. It detects elements in either liquid or solid samples through the application of characteristic wavelengths of electromagnetic radiation from a light source. The measured attribute is absorption.