Question

Course work ICP-OES (cont) 1. In atomic emission spectrometry list the emission sources used. Describe what is meant by a plasma and inductively coupled plasma. 2. What is the difference between an inductively coupled plasma and a direct current plasma? 3. List the components of an 1CP spectrometer. 4.Write notes on the sample introduction system. 5. Describe two configurations used for observing emission from the ICP

Answer 1

Question 1.

The emission sources used can be listed as follows.

i) Flame

ii) Inductively Coupled Plasma (ICP)

iii) Glow Discharge (GD)

iv) Laser Spark

v) Furnace

vi) Microwave Plasma

vii) DC Arc

viii) AC Spark

Plasma is defined as a neutral gas containing a significant number of both positive and negative ions or free electrons.

Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) is an emission spectrophotometric technique, exploiting the fact that excited electrons emit energy at a given wavelength as they return to ground state after excitation by high-temperature Argon Plasma.