Dionex ICS-900, Руководство оператора

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ICS-900 Operator’s Manual
20
Doc. 065215-02 9/09
2.3.5 Displacement Chemical Regeneration (DCR)
Displacement Chemical Regeneration (DCR) is the process that restores
the ability of the MMS 300 suppressor to suppress eluent. In DCR, the
eluent that exits the cell is pumped into the regenerant bottle. The eluent
pressurizes the bottle and pushes the regenerant into the suppressor.
However, because the eluent is a different density than the regenerant, it
remains separate.
In the anion DCR process (see Figure 2-8 ), the eluent is less dense than
the regenerant and it remains on the top of the bottle, forcing the
regenerant into the regenerant line at the bottom of the bottle and out into
the suppressor.
In the cation DCR process (see Figure 2-9 ), the eluent is denser than the
regenerant and it flows to the bottom of the bottle. This displaces the
regenerant, pushing regenerant out of the regenerant line at the top of the
bottle and out into the suppressor.
Figure 2-8. Anion ICS-900 Displacement Chemical Regeneration (DCR)
Eluent In
Regen In
Regen Out Eluent Out
Used eluent out to
regenerant reservoir
Regenerant out to waste
Regenerant in
from reservoir
Conductivity Cell
(in DS5 Detection Stabilizer)
AMMS 300
Eluent
out to cell
Used
Eluent
Eluent in from column
Regen In
Re
gen
Bo
ttle
Out
Anion
Regenerant