Inductively Coupled Plasma – Optical Emission Spectrometry (ICP-OES) is an analytical technique used for the detection of chemical elements by emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic of a particular element. This is used for simultaneous elemental analysis of Manganese, Iron, Copper, Zinc, Barium, Cadmium, Lead, Nickel, Selenium, Arsenic, and more.