TN48 (Method 1): Determination of Trace Anions in High-Purity Water by High-Volume Direct Injection with Online Eluent Generation
DescriptionThis note describes the use of an eluent generator with the high-volume direct-injection technique to determine trace anions in high-purity waters. The ability to generate high-purity and carbonate-free eluents on-line improves performance for trace-level analysis. Retention time reproducibility is improved, especially for early-eluting species. The baseline shift from the hydroxide gradient is significantly reduced. Two columns are described: the 2-mm IonPac AS11 & 2-mm AS15. Common inorganic anions and low molecular weight organic acids are determined below μg/L levels in less than 35 min.
|Keywords:||Formate, Reagent Free Ion Chromatography (RFIC), fluoride, Nitrate, Glycolate, trace anions, Nitrite, Chloride, Oxalate, phosphate, Acetate, Sulfate, High-purity water, High-Volume Direct Injection, IonPac AS11 Analytical column|
|Matrix:||High purity water|
|Author:||Ed Kaiser and Jeff Rohrer|
|Affiliation:||Thermo Fisher Scientific|
For Research Use Only. Not for use in diagnostic procedures.