Journal of Chemistry and Chemical Research

Ion chromatography is widely used in the analysis of water-soluble anions in atmospheric particulates due to its high sensitivity and excellent separation performance. To improve the determination accuracy and reduce interference, the selection of pretreatment methods is particularly crucial. This study compared several commonly used pretreatment methods, including filtration, acid hydrolysis, and ion exchange, evaluating their effects on the extraction efficiency of water-soluble anions, interference control, and analytical results during sample processing. The results showed that acid hydrolysis had the best performance in sample pretreatment, as it could effectively remove non-target substances, reduce background interference, and obtain accurate and reliable data. Through comparative experiments, this paper discussed the applicability of different pretreatment methods in the analysis of atmospheric particulates, providing a theoretical basis for subsequent environmental monitoring work.

Ion chromatography; Water-soluble anions; Atmospheric particulates; Pretreatment methods; Analytical methods