Dionex IonPac AS21 陰離子交換柱 063009

更新時(shí)間：2019-11-20

簡要描述：

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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Dionex IonPac AS21 陰離子交換柱 063009

當(dāng)你需要快速分離飲用水中高氯酸鹽與質(zhì)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(huán)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(shè)計(jì)和LC-MS和LC-MS/MS兼容性方便使用如jia胺揮發(fā)性流動相優(yōu)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(hù)柱
IonPac AG21 Guard Column (2 x 50 mm)	63071

For Fast Analysis of Trace Perchlorate in Drinking Water Prior to Detection with MS/MS

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.