Inductively Coupled Plasma Optical Emission Spectrometer Icp-Oes
Perkin-Elmer Optima 7000DV ICP-OES (Funded 2009) This instrument was funded by the CMC Foundation and CMC in May 2009. The ICP-OES is an industry and research standard to analyze aqueous solutions for multiple inorganic elements at low levels (part per billion) in a timely manner. These factors are important for facilities that routinely need the capability to perform analysis on a large volume of pending samples. In addition, the ICP-OES uses inert (Argon and Nitrogen) gasses which reduce risk management requirements. The current generation of ICP-OES instrumentation is relatively easy to use (Windows Based software) and therefore ideal for a teaching environment.
What is Inductively Coupled Plasma Optical Emission Spectrometry?
ICP-OES is part of the ICP family that also includes ICP-Mass Spectrometry but utilizes the properties of eletromagentic emission from atoms ionized by the plasma. Whereas, ICP-MS measures the mass of ionized atoms. ICP technology has evolved significantly since the 1960’s when the first ICP prototypes emerged to provide better analytical sensitivity and capacity than Atomic Absorption Spectrometry. Since its inception in the 1960’s ICP-OES has seen significant improvements in technology, capablity and price. Nowdays, ICP-OES is commonly found in contract analytical laboratories and academic facilities where routine analysis needing high sensitivity and thoroughput at relatively cost is needed.
The basic concept of ICP-OES is shown below in Figure 1. An aqueous sample is introduced into the nebulizer (Step 1) where it is aspirated into a very fine mist.
Figure 1. Basic concept of ICP-OES analysis for aqueous samples.