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For Separating Higher-Valence Anions
The IonPac® AS5 separates higher-valence anions, including polyphosphates, oxyanions, EDTA complexes, metal cyanide complexes, and hydrophobic anions such as iodide, thiosulfate, and thiocyanate.
For metal-EDTA complexes
For cyano-transition metal complexes
For hydrophobic anions, including iodide, thiocyanate, and thiosulfate
AS16 or AS20 columns are recommended for hydrophobic anions and highly charged anions
The AS5’s compatibility with weak eluents simplifies the determination of strongly-retained species, since these eluents are compatible with a suppressor. Furthermore, the rapid elution of strongly-retained species greatly improves peak shapes, lowers minimum detection limits, and increases sample throughput potential.
The selectivity of the AS5 makes it possible to rapidly elute strongly-retained species such a iodide and thiocyanate in brines without interference from the large chloride peak typical of such samples.
Note: IonPac AS16 or AS20 columns are recommended for hydrophobic anions and highly-charged anions.
| IonPac AS5 Anion-Exchange Column Specifications | |
|---|---|
| Dimensions | IonPac AS5 Analytical Column: 4 × 250 mm IonPac AG5 Guard Column: 4 × 50 mm |
| Maximum operating pressure | 2000 psi |
| phase compatibility | pH 0–14; 0–3% HPLC solvents |
| Substrate characteristics | Bead Diameter: 15 µm Cross-Linking (%DVB): 2% |
| Latex characteristics | Functional Group: Alkanol quaternary ammonium ion Latex Cross-Linking: 1% Latex Diameter: 120 nm Hydrophobicity: Low |
| Capacity | 20 µeq (4 × 250 mm analytical column) |
| Column construction | PEEK with 10-32 threaded ferrule-style end fittings. All components are nonmetallic. |