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| Spectrophotometry, Atomic Absorption Absorption Spectrophotometry, Atomic | Atomic Absorption Spectrophotometry A highly sensitive technique used to analyze various elements, especially metals, including aluminum, arsenic, beryllium, calcium, copper, iron, lead, and lithium, which are present in trace amounts. The atoms are excited above a ground state by flame vaporization, and the radiation emitted as the molecules return to a ground state is measured in unexcited non-ionized molecules. (Segen, Dictionary of Modern Medicine, 1992) |