Study of acidic impurities in the atmospheric air of the Orthodox settlement of Otrada (Volgograd), March-October, 2024
Abstract
Study of acidic impurities in the atmospheric air of the Orthodox settlement of Otrada (Volgograd), March-October, 2024
Incoming article date: 11.01.2025A study of acidic impurities in the atmospheric air of the Orthodox settlement of Otrada (Volgograd) in March-October 2024 was conducted based on the preparation of aerosol suspensions by washing particles from plant leaves with distilled water. The leaves of elm (Ulmus pumila L.) with aerosol particles were used as the research material. In the settlement of Otrada, we took samples of elm leaves (Ulmus pumila L.) at 10 study points. Sampling, including the preparation of aerosol suspensions, was correlated with well-known proven international methods. The value of the acidity index was measured on electrochemical equipment (S220-Kit pH meter complete with InLab Expert Pro-ISM electrode, China). Statistical analyses of the data obtained were performed in the R program (version 3.6.1, R Core Team 2020), statistical hypotheses were tested at a=0.05. The average values of the acidity index, where the pH value is.= 5.39+0.01, which indicates the presence of acidic impurities in the atmospheric air during the specified period in the settlement of Otrada and indicates the acidity of precipitation in the study area as a crisis zone ((pH=5.0-4.5), according to Svistov P.F. et al., 2012).
Keywords: dispersion, aerosols; surface density of particles; PM2.5; PM10; green infrastructure; natural pollution