Acid-Alkaline Peculiarities of Precipitation of the Coastal Zone in the South of Primorsky Region

Abstract

The purpose of this work is to characterise the peculiarities of the ionic composition of coastal precipitation and to identify the various components in the overall salt content. Materials and methods. The stationary atmospheric precipitation sampling point is located on the north-western coast of the Muravyov-Amursky Peninsula (Vladivostok city). The article analyses the data collected in 2017 during the warm period. The acidity, ionic composition and mineralisation of precipitation are analysed. Results and conclusions. The author determined seasonal trends of precipitation acidity. The contribution of acid-forming ions to the sum of precipitation anions was calculated. It is shown that nitrate and hydrocarbonate concentrations increase against the background of sulphate decrease as compared to previous years. It is revealed that the ratio of the basic ions is infl uenced by the trajectory of air mass transport.