Multiple choice

There are three states of matter namely solid liquid & gas. Which of the following spectroscopies is independent of states of matter?

  1. Atomic absorption spectroscopy

  2. Spark or arc atomic emission spectroscopy

  3. Inductively coupled plasma atomic emission spectroscopy

  4. Laser-induced breakdown spectroscopy
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D Correct answer
Explanation

aser-induced breakdown spectroscopy (LIBS) is a type of atomic emission spectroscopy which uses a highly energetic laser pulse as the excitation source. The laser is focused to form a plasma, which atomizes and excites samples. In principle, LIBS can analyse any matter regardless of its physical state, be it solid, liquid or gas.

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