5: Inductively Coupled Plasma: Optical Emission Spectrometry Check Access

This chapter discusses the use of inductively coupled plasma–optical emission spectrometry. A brief introduction to the theory is followed by a section detailing the advantages and disadvantages of the technique. A section on common errors discusses sample introduction, physical interferences, e.g. those associated with sample viscosity and/or dissolved solids and spectral interferences. A section on assessing the instrument’s performance against pre-set criteria is also presented. The introduction of organic solvents to the plasma is also addressed. Since this is potentially problematic, the use of specialised sample introduction systems that reduce the solvent loading of the plasma is described. The hints and tips section includes choosing the correct nebuliser/spray chamber assembly for the analysis, the use of internal standards, different wash solutions and data quality control. A final section on data analysis is also provided.