AN140: Fast Analysis of Anions in Drinking Water by Ion Chromatography

Instrument Type: IC

The U.S. National Primary Drinking Water Standards specify a Maximum Contaminant Level (MCL) for a number of inorganic anions to minimize potential health effects. In this Application Note, we describe the use of the IonPac AS14A anion exchange column for the routine high throughput determination of common inorganic anions in drinking water matrices. The IonPac AS14A provides greater speed and efficiency, ruggedness equivalent to the AS4A-SC column, improved separation of fluoride from the void volume (water dip), and better overall separation selectivity.

AN175: Determination of Sulfate and Chloride in Ethanol by Ion Chromatography

Instrument Type: IC

This application note describes the simplest, most direct method to measure mg/L concentrations of chloride and sulfate anions in ethanol. Sulfate and chloride are determined in 15 min by using IC with eluent generation and suppressed conductivity detection, on either an IonPac AS14A or IonPac AS18 column. The method is sensitive enough to monitor compliance with ASTM Specification D 4806. The methods described here were validated by Dionex during participation in the ASTM interlaboratory collaborative study to determine precision and bias for the new Standard Test Method.