Sample Introduction:

Inductively coupled plasma emission spectroscopy is used primarily for the qualitative and quantitative analysis of samples that are dissolved or suspended within aqueous or organic liquids. A sample is brought as a fine aerosol into the plasma that generally is achieved by pneumatic nebulisation. These are carried into the torch by argon gas flowing at a rate of 0.3 to 1.5 dm³/min by the central quartz tube. The aerosol enters the hot plasma zones with a low injection velocity so as to have a residence times of the order of ms that is required for an efficient atomisation and excitation. Thus, there are two steps in the sample introduction. These are as given below.

a)         Sample preparation

b)         Nebulisation