The Thermo Scientific Dionex IonPac*AS26 hydroxide-selective anion-exchange column is specifically designed for 2D-IC separation of haloacetic acids (HAAs) in drinking water. The capacity and selectivity of this column enables analysis of haloacetic acids in drinking water at low-μg/L concentrations. The Dionex IonPac AS26 column is available in standard bore (4 × 250 mm), microbore (2 × 250 mm), and capillary (0.4 × 250 mm) formats, supporting flow rates from 10 µL/min to 3 mL/min.
High capacity: 250 μeq per column (4 × 250 mm)
Determines HAAs in high-ionic-strength matrices without sample pretreatment
Column selectivity optimized for a 15 ºC operating temperature
Compatible with HPLC organic solvents
Used as second-dimension column in 2D-IC method for HAAs (0.4 × 250 mm)
| Dionex IonPac®AS26 Anion Exchange Column Specifications | |
|---|---|
| Substrate Characteristics: | Bead Diameter and Pore Size: 7.5 µm (2 × 250, 4 × 250, and 0.4 × 250 mm); supermacroporous resin (2000 Å) 13 µm (2 × 50, 4 × 50, 0.4 × 50 mm); microporous resin (<10 Å) Crosslinking (%DVB): 55% |
| Ion-Exchange Group: | Functional Group: Alkanol quaternary ammonium ion |
| Functional Group Characteristics: | Ultralow Hydrophobicity |
| Capacity: | 250 µeq (4 × 250 mm analytical column) 6 µeq* (4 × 50 mm guard column) 62.5 µeq (2 × 250 mm analytical column) 1.5 µeq* (2 × 50 mm guard column) 2.5 µeq (0.4 × 250 mm capillary column) 0.06 µeq* (0.4 × 50 mm capillary 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 AS26 Analytical Column: 2 × 250 mm, 4 × 250 mm Dionex IonPac AG26 Guard Column: 2 × 50 mm, 4 × 50 mm Dionex IonPac AS26 Capillary Column: 0.4 × 250 mm Dionex IonPac AG26 Capillary Guard Column: 0.4 × 50 mm |
| Maximum Operating Pressure: | 3000 psi (standard, microbore and capillary) |
| Mobile Phase Compatibility: | pH 0–14; 0–100% HPLC solvents |
Determination of haloacetic acids using the Thermo Scientific™ Dionex™ IonPac™ AS26 column with 2D-IC analysis.
Gradient separation of HAA Anions using the Dionex IonPac AS26 column.
Separation of oxyhalides and inorganic anions using the Dionex IonPac AS26 column with a hydroxide gradient.
Analysis of drinking water using the Dionex IonPac AS26 column.
The effect of temperature on selectivity using the Dionex IonPac AS26 column.
| Analytical Columns | |
|---|---|
| IonPac AS26 Capillary Column (0.4 x 250 mm) | 076018 |
| IonPac AS26 Analytical Column (4 x 250 mm) | 076020 |
| IonPac AS26 Analytical Column (2 x 250 mm) | 076022 |
| Guard Columns | |
|---|---|
| IonPac AG26 Capillary Guard Column (0.4 x 50 mm) | 076019 |
| IonPac AG26 Guard Column (4 x 50 mm) | 076021 |
| IonPac AG26 Guard Column (2 x 50 mm) | 076023 |
