Which of the following analytical technique is based on the emission of light radiation?
Correct answer: A. Flame photometry
- A. Flame photometry
- B. Atomic absorption spectrophotometry
- C. Raman spectroscopy
- D. Conductometry
Explanation
In flame photometry, a sample is introduced into a flame, causing atoms to become electronically excited. As they return to their ground state, they emit light at characteristic wavelengths, and the intensity of this emission is measured.
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About Analytical Chemistry
Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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