Abstract
The use of ion-exchange chromatography with an IonPac AS 14 column, 3.5 mM Na2CO3/1.0 mM NaHCO3 eluent and suppressed conductivity detection provides a simple, cost-effective, fast, accurate, and highly sensitive method for the determination of F−, Cl−, NO2 −, Br−, NO3 −, PO4 2−, SO4 2−, and C2O4 2− at low μ/L levels in environmental samples. Data on sensitivity, selectivity, accuracy, and % relative standard deviation are described. The method is suitable for many environmental applications including atmospheric aerosols (exposed on cellulose, glass fiber, and quartz filters), rainwater, cloud water, potable- and non-potable waters, and carbonated waters. Dominant components of the aerosol were SO4 2−, NO3 −, and Cl−. Rainwater, on the other hand, has relatively very low concentrations of these three species. The wide-spread concentration range for Cl− in variety of water samples and the high concentrations for SO4 2− in drinking water are striking. Determination of the anionic composition of carbonated waters revealed a considerable variation of the individual anions.
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