IonPac AS21 阴离子交换色谱柱 The IonPac AS21 是一款氢氧根体系阴离子交换色谱柱,用于快速分离饮用水中痕量的高氯酸盐,离子色谱与质谱/质谱检测器联用结果更好。该柱符合U.S.EPA 331.0标准。 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.