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Dionex IonPac AS21 陰離子交換柱 063009柱的容量和選擇性使快速分析高氯酸鹽在低μg/L濃度。
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當你需要快速分離飲用水中高氯酸鹽與質譜檢測之前，Thermo Scientific? Dionex IonPac AS21氫氧化物選擇性陰離子交換柱柱的選擇。本專欄是具體列出在美國環保局的方法331。柱的容量和選擇性使快速分析高氯酸鹽在低μg/L濃度。此外，該2x250毫米列格式設計和LC-MS和LC-MS/MS兼容性方便使用如jia胺揮發性流動相優化
Dionex IonPac AS21 陰離子交換柱 063009
訂貨信息：
Dionex IonPac AS21 陰離子交換柱
| 分析柱 | |
| IonPac AS21 Analytical Column (2 x 250 mm) | 63009 |
| 保護柱 | |
| IonPac AG21 Guard Column (2 x 50 mm) | 63071 |
The AS21 hydroxide-selective anion-exchange column is specifically designed for determination of trace perchlorate in drinking water prior to MS/MS detection. The capacity and selectivity enable fast analysis of perchlorate at low μg/L concentrations. The AS21 is the specified column in US EPA Method 331.0.
Fast separation of perchlorate prior to MS/MS detection
Optimized for methylamine or hydroxide mobile phases
Specified column for US EPA Method 331.0
Optimum capacity: 45 μeq per column (2 × 250 mm)
Operates at ambient or elevated temperatures
Compatible with organic solvents
The AS21 2 × 250 mm column format was specifically developed for MS/MS compatibility to allow use of volatile mobile phases such as methylamine.
| IonPac AS21 Anion-Exchange Column Specifications | |
|---|---|
| Dimensions: | IonPac AS21 Analytical Column: 2 × 250 mm IonPac AG21 Guard Column: 2 × 50 mm |
| Maximum Operating Pressure: | 3000 psi |
| Mobile Phase Compatibility: | pH 0–14; 0–100% HPLC solvents |
| Substrate Characteristics: | Bead Diameter and Pore Size: 7 μm (2 × 250 mm); super macroporous resin (2000 ?) 11 μm (2 × 50 mm); microporous resin (<1 ?) Crosslinking (%DVB): 55% |
| Ion Exchange Group: | Functional Group: Alkanol quaternary ammonium ion |
| Functional Group Characteristics: | Ultralow Hydrophobicity |
| Capacity: | 45 μeq (2 × 250-mm analytical column) 1.5 μeq* (2 × 50-mm guard column) *Guards are packed with a low-capacity microporous resin. |
| Column Construction: | PEEK with 10–32 threaded ferrule style end fittings. All components are nonmetallic. |
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