Dionex IonPac AS7 阴离子交换柱
Thermo Scientific? Dionex? IonPac? AS7 阴离子交换柱可用于分离多种多价阴离子，包括多聚磷酸盐、多聚膦酸盐和其他多价络合剂，并提供可靠的分析结果。 该款色谱柱的独特聚合物填料在分离离子和极性化合物时性能卓越，可在中等反压条件下实现高速、高效和高载量。 不过，更新款的 Dionex IonPac AS16 色谱柱推荐用于测定多聚磷酸盐。
多种基质中多价阴离子和螯合剂的分析
根据美国 EPA 方法 218.6 分析环境基质中的六价铬
使用柱后试剂和 UV 检测法分离复杂样品基质中的多价阴离子和螯合剂
利用安培检测器测定高离子强度基质中的氰化物、硫化物和碘化物
通常与柱后试剂配合用于光度检测
包含阴离子和阳离子交换能力
兼容多种淋洗液和检测器，以用于高灵敏度和选择性分析
提供多种规格，实现应用灵活性
4 x 250mm、2 x 250mm 分析柱
4 x 50m、2 x 50mm 保护柱
更长的 250 mm 柱，实现更复杂样品基质的更高分辨率分离
更小柱内径，提高质量灵敏度，节省洗脱液和试剂，并且降低运行成本
Dionex IonPac AS7 阴离子交换柱
订货信息：
| 分析柱 | |
| IonPac AS7 Analytical Column (4 x 250 mm) | 035393 |
| IonPac AS7 Analytical Column (2 x 250 mm) | 063097 |
| 保护柱 | |
| IonPac AG7 Guard Column (4 x 50 mm) | 035394 |
| IonPac AG7 Guard Column (2 x 50 mm) | 063099 |
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 |
Determination of polyphosphonate scale inhibitors using the IonPac AS7 4 mm column.
Chelating agents by UV detection with postcolumn ferric nitrate.
Determination of cyanide and sulfide using the IonPac AS7 2 mm column with amperometric detection and a disposable silver electrode.
Determination of hexavalent chromium using the IonPac AS7 column.
Determination of cyanide and sulfide in sodium hydroxide and wastewater samples using the IonPac AS7 column.
| Product Data Sheets | |
|---|---|
 | IonPac AS7 Anion Exchange Column Data Sheet |
| IonPac AS7 Analytical Column Manual |
| Application Updates | |
|---|---|
| AU 144: Determination of Hexavalent Chromium in Drinking Water Using Ion Chromatography |
| AU 107: Determination of Cyanide in Strongly Alkaline Solutions |
| Technical Notes | |
|---|---|
| TN 26: Determination of Cr(VI) in Water, Waste Water, and Solid Waste Extracts |
获取电话