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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 mmMaximum Operating Pressure: 3000 psi Phase Compatibility: pH 0–14; 0–* HPLC solvents