Elemental composition of macrophytes of thermokarst lakes in Western Siberia

摘要: Methods. The elemental composition of the samples was studied by inductively coupled plasma mass spectrometry (ICP MS, Agilent Technologies, 7500 se), the concentration of anions in water samples was determined by liquid chromatography (Dionex ICS 2000), the dissolved organic carbon was defined by infrared spectroscopy TOC VCSN, Shimadzu), the organic carbon content of the sediments was determined by infrared spectrometry (Horiba Jobin Yvon Emia 320V C/S Analyzer). Statistical processing of data was carried out using the STATISTICA 6.0 software package.Results. The coefficients of biological accumulation of chemical elements in macrophytes relative to sediments and pore water were cal culated for four key thermokarst lakes. It has been shown that macronutrients (Na, Mg, Ca), some heavy metals and metalloids (Ni, Cu, Zn, Co, As, Cd), as well as B and Mo are actively accumulated in water plants of thermokarst lakes of Western Siberia. High coefficients of accumulation of heavy metals indicate a significant phytoremediation function of macrophytes in a given territory.