Anions in Wastewater Using the Eco IC

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.

 

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

 

This information has been sourced, reviewed and adapted from materials provided by Metrohm AG.

For more information on this source, please visit Metrohm AG.

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