Figure 28, Neutralization and preconcentration, Figure 29 – Metrohm 850 Professional IC MSM-HC MCS Prep 3 User Manual
Page 61: Injection and sequential suppression, Injection valve 1 (28-a) to position, Injection valve 2 (28-c), 2) onto the
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3 Installation
850 Professional IC Anion – MSM-HC – MCS – Prep 3
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51
￭
The analyte ions are retained on the preconcentration column
(28-D) while the transfer solution flows to the waste container.
A
B
C
D
1
2
Figure 28
Neutralization and preconcentration
1
Sample
2
Transfer solution
A
Injection valve 1
B
SPM
C
Injection valve 2
D
Preconcentration column
3 Injection and sequential suppression
￭
Injection valve 2 is switched:
– Injection valve 1 still is in position Inject.
– Injection valve 2 (29-C) in position Inject.
￭
With the eluent flow (29-3) the analyte ions retained on the pre-
concentration column (29-D) are rinsed onto the separation col-
umn (29-E).
￭
The sequential suppression with the MSM-HC (29-F) and the MCS
follows after the separation.
C
F
D
E
3
Figure 29
Injection and sequential suppression
3
Eluent
C
Injection valve 2