The Eco IC, an entry-level ion chromatograph, has been designed for routine water analysis. Featuring a conductivity detector, the instrument can be used either with or without chemical suppression.
Here, the Metrosep A Supp 17 - 250/4.0 column is used to determine anions in wastewater. This type of column is suitable for water analysis at ambient temperatures.
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Results
| Anion |
Conc. [mg/L] |
| 1 Fluoride |
n.q. |
| 2 Chloride |
102.7 |
| 3 Nitrite |
n.q. |
| 4 System peak (carbonate) |
- |
| 5 Bromide |
n.q. |
| 6 Nitrate |
21.5 |
| 7 Sulfate |
29.7 |
| 8 Phosphate |
n.q. |
Sample
Wastewater
Sample Preparation
Metrohm Inline Ultrafiltration
Columns
| . |
. |
| Metrosep A Supp 17 - 250/4.0 |
6.01032.430 |
| Metrosep A Supp 17 Guard/4.0 |
6.01032.500 |
Solutions
| Eluent |
5.0 mmol/L sodium carbonate;
0.2 mmol/L sodium hydrogen carbonate |
| Suppressor regenerant |
100 mmol/L sulfuric acid |
| Rinsing solution |
STREAM |
Analysis
Detection of conductivity after chemical suppression
Instrumentation
| Eco IC |
2.925.0020 |
| 863 Compact IC Autosampler |
2.863.0010 |
| IC equipment: Inline Ultrafiltration |
6.5330.110 |
Parameters
| Flow rate |
0.6 mL/minutes |
| Injection volume |
10 µL |
| Pmax |
18 MPa |
| Recording time |
34 minutes |
| Column temperature |
Ambient |
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This information has been sourced, reviewed and adapted from materials provided by Metrohm AG.
For more information on this source, please visit Metrohm AG.