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Dionex IonPac AS20 陰離子交換柱 063148
飲用水中高氯酸鹽的簡(jiǎn)化，地表水和地下水的微量分析，矩陣使用Thermo Scientific? Dionex? IonPac? AS20毛細(xì)管，分析保護(hù)柱。本專欄的容量和選擇性確保高氯酸鹽可以量化的低μg/L采用抑制電導(dǎo)檢測(cè)的濃度，即使在濃度很高的氯化物，碳酸鹽和硫酸鹽的存在。本欄是美國(guó)環(huán)保局規(guī)定的314.1用于樣品預(yù)濃縮后飲用水中痕量高氯酸的測(cè)定（驗(yàn)證性方法）。
Dionex IonPac AS20 陰離子交換柱 063148
訂貨信息：
Dionex IonPac AS20 陰離子交換柱
| 分析柱 | |
| IonPac AS20 Analytical Column (2 x 250 mm) | 063065 |
| IonPac AS20 Analytical Column (4 x 250 mm) | 063148 |
| IonPac AS20 Capillary Column (0.4 x 250 mm) | 075399 |
| 保護(hù)柱 | |
| IonPac AG20 Guard Column (2 x 50 mm) | 063066 |
| IonPac AG20 Guard Column (4 x 50 mm) | 063154 |
| IonPac AG20 Capillary Guard Column (0.4 x 50 mm) | 075400 |
For Determination of Trace Perchlorate Using Suppressed Conductivity Detection
The IonPac? AS20 hydroxide-selective anion-exchange column is specifically designed for determination of trace concentrations of perchlorate in drinking water, surface water, and groundwater matrices. The capacity and selectivity of the AS20 ensures that perchlorate can be quantified at low μg/L concentrations using suppressed conductivity detection, even in the presence of very high concentrations of chloride, carbonate, and sulfate. The new IonPac AS20 Capillary Column is packed with the same material as the equivalent standard bore version (providing the same performance as a 4 mm column) but requires only 1/100th the eluent flow rate. The capillary format provides the advantage of significantly reduced eluent consumption, which helps reduce operating costs.
Recommended for US EPA Method 314.1 (Confirmatory Method)
High capacity: 310 μeq per column. (4 × 250 mm)
Use the Cryptand C1 Concentrator Column for sample preconcentration with the analytical column
Simplified Reagent-Free IC operation provided by the Eluent Generator
ASRS 300 or ACES 300 provides RFIC operation with low background and enhanced analyte sensitivity
Column selectivity is optimized for 30 °C operating temperature
Compatible with organic solvents
The IonPac AS20 is the specified column in US EPA Method 314.1 (Confirmatory Method). The Cryptand C1 Concentrator Column is the specified concentrator column for sample preconcentration in that method.
Use the IonPac AS20 column with an RFIC? system for optimum detection limits. Use the Anion Self-Regenerating Suppressor (ASRS? 300) or the Anion Capillary Electrolytic Suppressor (ACES 300) with the AS20 column for eluent suppression.
| IonPac AS20 Anion-Exchange Column Specifications | |
|---|---|
| Maximum Operating Pressure: | 4000 psi (standard and microbore) 5000 psi (capillary) |
| Mobile Phase Compatibility: | pH 0–14; 0–100% HPLC solvents |
| Ion Exchange Group: | Functional Group: Alkanol quaternary ammonium ion |
| Column Construction: | PEEK with 10–32 threaded ferrule style end fittings. All components are nonmetallic. |
| Functional Group Characteristics: | Ultralow Hydrophobicity |
| Dimensions: | IonPac AS20 Capillary Column: 0.4 ×250 mm IonPac AG20 Capillary Guard Column: 0.4 × 50 mm IonPac AS20 Analytical Column: 2 × 250 mm IonPac AG20 Guard Column: 2 × 50 mm IonPac AS20 Analytical Column: 4 × 250 mm IonPac AG20 Guard Column: 4 × 50 mm
|
| Capacity: | 3.1 μeq (0.4 × 250 mm capillary column) |
| Substrate Characteristics: | Bead Diameter and Pore Size: 7.5 μm (2 × 250, 4 × 250 and 0.4 × 250 mm); super macroporous resin (2000 ?) 11 μm (2 × 50, 4 × 50 and 0.4 × 50 mm); microporous resin (<1 ?) Crosslinking (%DVB): 55% |
