For Separation of Haloacetic Acids and Bromate in Drinking Water
The Thermo Scientific Dionex IonPac™ AS24 is a high-capacity hydroxide-selective anion-exchange column optimized for the separation of haloacetic acids (HAAs) as well as a variety of environmental anions. The capacity and selectivity enables analysis of haloacetic acids in drinking water at low-μg/L concentrations. The Dionex IonPac AS24 2 × 250 mm column is specifically designed for separation of haloacetic acids in drinking water prior to MS or MS/MS detection and is the specified column in US EPA Method 557.
- Specified column for US EPA Method 557 (2 × 250 mm)
- High capacity: 140 μeq per column (2 × 250 mm)
- Determine HAAs in high-ionic strength matrices without sample pretreatment
- Column selectivity is optimized for a 15 ºC operating temperature
- Compatible with HPLC organic solvents
- Used as second dimension column in 2-D method for bromate in US EPA Method 302.0 (2 × 250 mm)
- Extended application capabilities providing excellent separation of environmental anions
| Thermo Scientific Dionex IonPac™ AS24 Anion-Exchange Column Specifications |
|---|
| Substrate Characteristics: | Bead Diameter and Pore Size:
7 µm (2 × 250 mm); super macroporous resin (2000 Å)
11 µm (2 × 50 mm); microporous resin (<10 Å)
Crosslinking (%DVB): 55% |
| Ion Exchange Group: | Functional Group: Alkanol quaternary ammonium ion |
| Functional Group Characteristics: | Ultralow hydrophobicity |
| Capacity: | 140 µeq (2 × 250 mm analytical column)
1.5 µeq* (2 × 50 mm guard column)
*Guard is packed with a low-capacity microporous resin. |
| Column Construction: | PEEK™ with 10-32 threaded ferrule style end fittings.
All components are nonmetallic. |
| Dimensions: | Dionex IonPac AS24 Analytical Column:
2 × 250 mm
Dionex IonPac AG24 Guard Column:
2 × 50 mm |
| Maximum Operating Pressure: | 3000 psi |
| Mobile Phase Compatibility: | pH 0–14; 0–100% HPLC solvents |
Determination of haloacetic acids using the IonPac AS24 column and MS/MS detection.
Determination of haloacetic acids using the IonPac AS24 column and MS detection.
Determination of trace concentrations of bromate using the IonPac AS24 column with two-dimensional ion chromatography.
Separation of various anions on an IonPac AS24 column using a potassium hydroxide eluent delivered by an eluent generator.
Structure of an IonPac AS24 packing particle
| Analytical Columns |
|---|
| IonPac AS24 Analytical Column (2 x 250 mm) |
064153 |
| Guard Columns |
|---|
| IonPac AG24 Guard Column (2 x 50 mm) |
064151 |
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