IonPac AS19 Hydroxide-Selective Anion-Exchange Column
For Determination of Oxyhalides and Inorganic Anions
The IonPac? AS19 hydroxide-selective anion-exchange column is specifically designed
for trace bromate in drinking water. Its high capacity and selectivity
allow the determination of bromate in drinking water at the low-μg/L
level. The IonPac AS19 columns meets the performance requirements of US
EPA Methods 300.0 and 300.1.
The new IonPac AS19 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.
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Recommended hydroxide-selective column for trace bromate in drinking water matrices
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High capacity: 240 μeq per column (4 × 250 mm)
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Meets or exceeds performance requirements of US EPA Methods 300.0 and 300.1
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Column selectivity is optimized for 30 °C operating temperature
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Compatible with organic solvents
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Low background signal and enhanced analyte sensitivity with the ASRS? 300 and an RFIC system
The
IonPac AS19 is designed for the analysis of oxyhalides and common
inorganic anions including fluoride, chlorite, bromate, chloride,
nitrite, bromide, chlorate, nitrate, phosphate, and sulfate in drinking
water, groundwater, wastewater, and other diverse sample matrices. The
IonPac AS19 allows analysis of most drinking water without the use of
sample pretreatment or preconcentration. This column is ideally used
with an RFIC system for automatic eluent generation.
The key
application for the IonPac AS19 is the determination of trace bromate in
drinking water matrices using a potassium hydroxide gradient with
suppressed conductivity detection. The selectivity of the AS19 ensures
that bromate can be quantified at low μg/L concentrations using
suppressed conductivity detection even in the presence of very high
concentrations of chloride, sulfate, and carbonate.
Note: Use the Anion Self-Regenerating Suppressor (ASRS 300) with the IonPac AS19 column for eluent suppression.
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IonPac AS19 Anion-Exchange Column Specifications
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Dimensions
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IonPac AS19 Analytical Column:
2 × 250 mm and 4 × 250 mm
IonPac AG19 Guard Column:
2 × 50 mm and 4 × 50 mm
IonPac AS19 Capillary Column:
0.4 × 250 mm
IonPac AG19 Capillary Guard Column:
0.4 × 50 mm
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Maximum operating pressure
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4000 psi (standard and microbore)
5000 psi (capillary)
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Ion-exchange group
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Functional Group: Alkanol quaternary ammonium ion
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Functional group characteristics
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Ultralow hydrophobicity
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Capacity
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2.4 μeq (0.4 × 250 mm capillary column)
0.06 μeq* (0.4 × 50 mm capillary guard column)
60 μeq (2 × 250 mm analytical column)
1.5 μeq* (2 × 50 mm guard column)
240 μeq (4 × 250 mm analytical column)
6 μeq* (4 × 50 mm guard column)
*Guards are packed with a low-capacity microporous resin.
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Column construction
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PEEK with 10-32 threaded ferrule-style end fittings.
All components are nonmetallic.
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Substrate characteristics
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Bead Diameter and Pore Size: 7.5 μm (0.4 x 250, 2 × 250 and 4 × 250 mm);
super macroporous resin (2000 ?)
12 μm (0.4 x 50, 2 × 50 and 4 × 50 mm);
microporous resin (<1 ?)
Cross-Linking (%DVB): 55%
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Mobile phase compatibility
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pH 0–14; 0–100% HPLC solvents
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Analytical Columns
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IonPac AS19 Analytical Column (4 x 250 mm)
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062885
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IonPac AS19 Analytical Column (2 x 250 mm)
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062886
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IonPac AS19 Capillary Column (0.4 x 250 mm)
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072064
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Guard Columns
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IonPac AG19 Guard Column (4 x 50 mm)
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062887
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IonPac AG19 Guard Column (2 x 50 mm)
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062888
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IonPac AG19 Capillary Guard Column (0.4 x 50 mm)
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072065
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