Metrohm 850 Professional IC MSM-HC MCS Prep 3 - Manual (Page 61)

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3 Installation
850 Professional IC Anion – MSM-HC – MCS – Prep 3
￭￭￭￭￭￭￭￭ 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