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Dionex IonPac AS7 陰離子交換柱 035393
Thermo Scientific? Dionex? IonPac? AS7 陰離子交換柱可用于分離多種多價陰離子，包括多聚磷酸鹽、多聚膦酸鹽和其他多價絡合劑，并提供可靠的分析結果。 該款色譜柱的*聚合物填料在分離離子和極性化合物時性能，可在中等反壓條件下實現高速、高效和高載量。 不過，更新款的 Dionex IonPac AS16 色譜柱推薦用于測定多聚磷酸鹽。
描述
多種基質中多價陰離子和螯合劑的分析
根據美國 EPA 方法 218.6 分析環境基質中的六價鉻
使用柱后試劑和 UV 檢測法分離復雜樣品基質中的多價陰離子和螯合劑
利用安培檢測器測定高離子強度基質中的氰hua物、硫化物和碘化物
通常與柱后試劑配合用于光度檢測
包含陰離子和陽離子交換能力
兼容多種淋洗液和檢測器，以用于高靈敏度和選擇性分析
提供多種規格，實現應用靈活性
4 x 250mm、2 x 250mm 分析柱
4 x 50m、2 x 50mm 保護柱
更長的 250 mm 柱，實現更復雜樣品基質的更高分辨率分離
更小柱內徑，提高質量靈敏度，節省洗脫液和試劑，并且降低運行成本
Dionex IonPac AS7 陰離子交換柱 035393
訂貨信息：
Dionex IonPac AS7 陰離子交換柱
| 分析柱 | |
| IonPac AS7 Analytical Column (4 x 250 mm) | 035393 |
| IonPac AS7 Analytical Column (2 x 250 mm) | 063097 |
| 保護柱 | |
| IonPac AG7 Guard Column (4 x 50 mm) | 035394 |
| IonPac AG7 Guard Column (2 x 50 mm) | 063099 |
For Separation of a Wide Range of Polyvalent Anions
The IonPac? AS7 separates a wide variety of polyvalent anions, including polyphosphates, polyphosphonates, and other polyvalent complexing agents such as EDTA and NTA using acidic eluent (eliminating metal interferences) with postcolumn derivatization and UV-Vis detection.
For polyvalent anions and chelating agents in complex sample matrices
Determines cyanide and sulfide using amperometric detection
Useful for hexavalent chromium in environmental matrices
The AS7 column has a unique polymer packing that provides superior performance for separating ionic and polar compounds. The patented packing offers high speed, high efficiency, and high loading capacity at moderate backpressures.
Note: The newer IonPac AS16 or AS20 column is recommended for polyphosphates.
| IonPac AS7 Anion-Exchange Column Specifications | |
|---|---|
| Maximum operating pressure | 4000 psi (26 MPa) |
| Mobile phase compatibility | pH 0–14 |
| Column construction | PEEK? with internal style 10-32 threaded ferrule-style end fittings. All components are nonmetallic. |
| Substrate characteristics | Particle Diameter: 10 μm Cross-Linking (%DVB): 2% |
| Latex characteristics | Functional Group: Alkyl quaternary ammonium Latex Cross-Linking: 5% Latex Diameter: 530 nm Capacity (μeq/column): 100 μeq (4 x 250 mm) and 25 μeq (2 x 250 mm) Hydrophobicity: Medium-high |
| Analytical column dimensions | IonPac? AS7 Column: 4 x 250 and 2 x 250 mm |
| Guard column dimensions | IonPac AG7 Column: 4 x 50 and 2 x 50 mm |
