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Separation of six inorganic anions using Metrosep A Supp 10 column

Separation of inorganic anion standards at eluent conditions recommended by the column manufacturer.

Background and noise was suppressed by Xenoic® XAMS membrane suppressor with the Xenoic® ASUREX automatic regenerator.

Metrosep A Supp 10 with XAMS suppressor

Ion chromatography of anions on a Metrosep A Supp 10 column (250×4 mm) using an eluent containing 5.0 mM Na₂CO₃ and 5.0 mM NaHCO₃ in water pumped at 1.0 mL/min at 24 °C. Background reduced to ~22 µS/cm by XAMS suppressor with ASUREX-A100 automatic regenerator. Eluent pumping and conductivity detection by Metrohm 761 Compact IC. Injection of 20 µL of Cl¯ (2 mg/L), NO₂¯ (5 mg/L), HPO₄²¯, Br¯, NO₃¯, SO₄²¯ (10 mg/L) in water.

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