Thermo Scientific Dionex ICS-2000, Operator'S Manual

Page: 14 / 390

ICS-2000 Ion Chromatography System
1-2
Doc. 031857-03 4/06
A typical IC analysis consists of six stages (see Figure 1-1 ).
1. Eluent Delivery
•
Eluent, a liquid that helps to separate the sample ions, carries the
sample through the ion chromatography system. The ICS-2000
includes an eluent generator, which generates eluent online from
deionized water.
•
When the ICS-2000 is controlled from the front panel, only isocratic
eluent delivery is possible. This means that the eluent composition
and concentration remain constant throughout the run. Gradient
delivery (a change in concentration over time) is possible when the
ICS-2000 is controlled by Chromeleon
®
Chromatography
Management System (the data collection system for the ICS-2000).
2. Sample Injection
•
The liquid sample is loaded into a sample loop either manually or
automatically (if an automated sampler is installed). When triggered,
the ICS-2000 injects the sample into the eluent stream.
Figure 1-1. Ion Analysis Process
Guard Column
Separator
Column
Pump
Conductivity
Cell
Injection
Valve
Suppressor
1. Eluent
Delivery
3. Separation
5. Detection
6. Data Analysis
Sample Loop
Sample
Eluent
4. Suppression
2. Sample
Injection