Trace Elements in Medicine (Moscow)
2018, 19(4): 20-30
ORIGINAL PAPERS

CHEMICAL AND ELEMENT COMPOSITION OF GROUNDWATER IN KARADAG NATURE RESERVE

N.А. Golubkina¹, V.А. Lapchenko²

¹ Feredal scientific center of vegetable production, Selectsionnaya 14, VNIISSOK, 143072, Moscow region, Odintsovo district, Russia
² «T.A. Viazemski Karadag scientific station – Nature reserve RAS», Nauki st, 22, Feodosia, Kurortnoe, 498188, Crimea, Russia

DOI: 10.19112/2413-6174-2018-19-4-20-30 

ABSTRACT. Evaluation of Karadag nature reserve groundwater chemical and element composition was achieved. According to ICP-SM data heavy metals content in most cases was below detection limit. Significant amount of Karadag water sources contained elevated values of boron (480–570 µg/L), lithium (30–40 µg /L) and sodium (215-246 mg/L). Using fluorimetric method of selenium analysis it was estimated that concentration range of the element was 93–730 ng/L with the highest values typical for the spring in Roses valey (The South-Eastern part of the reserve), and the lowest- in Gyaur-Cheshme spring (the central part of the researve). High mineralization of groundwater at the South-Western part of Karadag was demonstrated. The anthropogenic component of the chemical composition of groundwater was manifested in elevated concentrations of nitrates for water sources in the near vicinity of residential buildings (wells of the Biostation and well at the foot of Medovaya mountain). Comparison of the results for two Karadag springs with the fragmentary data of water quality made in 1987 revealed that during 30 years the level of mineralization of water had significantly increased with a moderate decrease in magnesium content.

KEYWORDS: Karadag, groundwater, element composition, water quality.