Determination of Common Inorganic Anions in Acid Rain by Reagent-Free Ion Chromatography (RFIC)

Tue, 09/30/2003 - 8:00pm

Brian M. De Borba, Douglas W. Later, and Jeff S. Rohrer
Monitoring the inorganic anion content in air and rain is essential not only for assessing the effects of pollutants on global ecology, but also for monitoring the progress of pollution control and abatement efforts. Ion chromatography (IC) is a widely used and accepted technique for determining low concentrations of inorganic anions in acid rain. The U.S. EPA has specified the use of IC with suppressed conductivity detection as the method of choice for measuring such pollutants in wet deposition samples.1,2 Here we describe an IC method using a high capacity anion exchange column and RFIC to determine fluoride, chloride, nitrate, and sulfate in a simulated rainwater sample.

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