[en] The investigation of radionuclides (⁷Be ^32,33P and ³⁵S) and stable sulfur and phosphorus forms was based on the Tessier sequential extraction method. The properties of radionuclide carriers can be transformed in the atmosphere in a very short time (days, hours), in contrast to soil and the hydrosphere. Oxidation processes proceeding in the atmosphere induce changes in the aerosol carrier properties. The aerosol can be characterized by low pH and high Eh values corresponding to high 7Be solubility. The unexpectedly high negative Eh values obtained in dry summer period indicate that the ⁷Be ^32,33P aerosol is bound to insoluble carriers. ¹³⁷Cs solubility does not depend on changes in pH. This can be explained by the fact that in contrast to ⁷Be, ¹³⁷Cs is associated with the exchangeable fraction. Cs ions can be replaced not only by H⁺ but also by NH₄⁺ and other ions. ⁷Be aerosols collected at the seaside of the Baltic sea (Preila) were found to be more soluble than those in Vilnius, their solubility was up to 50-90 % and clear dependence between ⁷Be solubility, pH and Eh was not observed. It can be attributed to differences in the atmospheric aerosol composition (e.g. soluble chlorides) in Vilnius and Preila. A great variety of ⁷Be carriers properties as well as their dependence on the season and the existence of admixtures in the atmosphere require great caution in applying this isotope in tracer investigations. Soluble carriers are removed faster from the atmosphere by precipitation. The significance of this fact is confirmed by the ratio of ⁷Be/³²P in the air and precipitation. Both soluble and insoluble aerosols can be formed depending on the environmental conditions