Studying the potentials of secondary ion-mass spectrometry in the analysis of atmospheric water drop composition

The applicability of secondary ion-mass spectrometry to the qualitative and quantitative determination of atmospheric water drop composition was considered. Aqueous solutions of sulfuric acid with concentrations from 10 −1 to 10 −6 M were used as model solutions. It was shown that the composition of samples could be determined from the ion peaks in the positive and negative mass spectra. Quantification was successful down to 10 −6 M, which corresponded to the concentrations of the main trace components in rain water.