44 Agilent Restricted Agilent 5110/5100 ICP-OES Service Manual
3 General Information
Sample introduction
Sample introduction
Section Contents:
Description 44
Nebulizers 45
Spraychambers 47
Description
The sample introduction system conditions and transports the sample into the plasma. The
sample introduction system includes: Torch, Spraychamber, Nebulizer, Peristaltic pump and
associated tubing.
Figure 4. Sample introduction system (kitchen area with optional AVS)
The function of the liquid sample introduction system is to deliver a uniform amount of sample
to the plasma for excitation to atomic/ionic emission states.
The analyte is transported to the nebulizer by either a 3 channel or 5 channel peristaltic pump
which is controlled via a high speed SLIP interface. The flow of the liquid sample into a nebulizer
is controlled by tubing fitted on the peristaltic pump. The pump rotates at user specified speeds.
The speed of the pump and the internal diameter of the tubing that supplies the sample to the
nebulizer regulates the amount of sample that is aspirated.
The liquid sample introduction system forms an aerosol by combining a sample together with
an argon carrier gas. The aerosol is then transported to the plasma’s preheating zone. As the
aerosol passes through the pre-heated zone and into the plasma it rapidly changes state by
• Desolvation
• Vaporization
• Atomization
• Excitation to emission (atomic and ionic)
The spraychamber waste liquid is transported by the peristaltic pump to a suitable waste
container.
To Next Page
Loading...
Need help?
General
