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Wood Ash Database

– Wood for Energy -

Analysis and extraction methods

ICP-QMS

ICP-QMS utilizes plasma of the same kind as in ICP-AES. However, in ICP-QMS the plasma is used to transfer chemical elements to ions, which are then separated by mass in a mass spectrometer. In this way, the various chemical elements can be separated and the sample’s content determined.

The central part of ICP-MS is the ‘interface’ whereby ions from the plasma are introduced into the high-vacuum chamber of the mass spectrometer. ICP-MS combines properties of ICP (such as simple and swift sample management) and mass spectrometry (high sensitivity, isotope measurement). For most elements, the detection limits of this method is significantly lower than ICP-AES; for certain elements at the level of ng/l in water solutions.