Earth’s Cryosphere», 2019, Vol. XXIII, № 4, p. 50-55
SOIL CHEMISTRY DYNAMICS AT SNOW DISPOSAL SITES IN YUZHNO-SAKHALINSK
V.A. Lobkina, А.А. Muzychenko, M.V. Mikhalev
Far East Geological Institute, FEB RAS, Sakhalin Department,
25, Gorkogo str., Yuzhno-Sakhalinsk, 693000, Russia; valentina-lobkina@yandex.ru
Soil chemistry dynamics at snow disposal sites in Yuzhno-Sakhalinsk has been monitored since 2013 to evaluate the contents of elements and physicochemical properties of soils. The measured element contents were compared with the respective approximate permissible concentrations for soils and background values. Four soil samples collected in 2013 at snow disposal site 2 in the southern part of Yuzhno-Sakhalinsk city contained abnormal concentrations of Ni, As, V, Cu, and Zn. More data were obtained from seventeen other soil samples taken in 2017: eleven samples at site 1 (northern part of the city), five samples at site 2, and one reference sample. The concentrations of chlorine, sulfate, sodium, and calcium ions exceeded the background values: Cl– in eleven samples, in nine samples, Na+ in fifteen samples, and Ca2+ in fourteen samples. The concentrations of heavy metals (Pb, Zn, and Ni) analyzed in three samples were above the background (Pb) and the approximate permissible values (Zn and Ni). Soils sampled in 2018 contained Zn, Ni, Pb, As, and Cu exceeding the approximate permissible concentrations. The results of soil analysis demonstrate that soils at snow disposal sites and in their vicinities in urban areas can accumulate toxic chemicals and pose environment risks.
Geoenvironment, soil pollution, snow disposal site, artificial snow patch, Yuzhno-Sakhalinsk, Sakhalin