Application of a Portable Ion Chromatograph for Field Site Measurements of the Ionic Composition of Fog Water and Atmospheric Aerosolsa

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Abstract
For the analysis of selected organic and inorganic ions in atmospheric aerosol samples, Single Column Ion Chromatography was used. Atmospheric aerosol constituents were sampled with five-stage impactors, diffusion denuder trains and fog samplers. The concentrations of the components Cl−, NO− NO− SO− and hydroxymethylsulfonate (HMSA) were determined by anion chromatography, Fluoride, formate, acetate, glycolate/lactate, propionate and butyrate were analyzed with ion exclusion chromatography, whereas monovalent cations Na+, NH− and K+ with cation chromatography, Resolution of HMSA-formate and HMSA-chloride pairs which were the most problematic cases were studied. Cross interferences and detection limits of all the ions of interest were determined. The methods were applied in a field sampling campaign in the Po Valley.