iCAP 6000 Series ICP-OES Spectrometer Hardware Manual
Page 23 of 51 Version 1.5 – March 2006
7 Sample Introduction System Set-up
7.1 Introduction
When a sample is aspirated and a proportion of the aerosol generated by the nebuliser is
passed to plasma through the torch assembly, it generates a load on the plasma. The RF
generator, the plasma conditions and the sample introduction system should be optimised for
the particular sample and solvent type being introduced.
7.2 Centre tube Options
One of the options to alter the characteristics of the sample reaching the plasma is to use a
different centre tube in the torch. The options are:
1.5mm quartz for aqueous solutions (single red ring)
1.0mm quartz for organic solutions (double red ring)
2.0mm quartz for high dissolved solids solutions (single blue ring, standard on Duo
configurations)
2.0mm Ceramic for HF solutions
7
Figure 29 – Torch Centre Tube Options
7.3 Nebuliser Options
There are a variety of nebuliser options for the iCAP 6000. The use of each type is application
and method specific, this is discussed below.
Control of the nebuliser pressure, or flow, is either through the control software or via a
manual adjustment. The control is specific to the model of the iCAP 6000.
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