Analytical Chemistry

(Chris Devlin) #1
chlorine were determined using the ELAN's negative ion detection capabilities.
Some comparisons with flame emission spectrometry can be seen in Table 8.6.

ference from argon and polyatomic ions formed by argon with matrix elements C, N and O.


Principles


The ICP torch provides a rich source of free atoms and ions from the elements comprising the sample.
In ICP-MS, part of the sample stream from a point close to the centre of the fireball is directed to a
mass spectrometer. The resulting mass spectrum can be used to identify elements from the mass
numbers of the ion peaks and the peak size for quantitative analysis. Moreover, the whole spectrum can
be displayed at the same time providing qualitative analysis for a wide range of elements from one
display

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