DOI: 10.1594/pangaea.982502
title: Ionic composition of late Pleistocene ice wedges (IW-17 and IW-20) of the Batagay yedoma, Verkhoyansk District of Yakutia

description: The subject of the study is the ionic composition of syngenetic Late Pleistocene ice wedges: IW-17 and IW-20, located in Batagay yedoma. Both ice wedges consist of ultra-fresh ice with concentrations of major ions from 20 to 40 mg/l. For samples from ice, a method was used to measure the mass concentration of Ca2+, Mg2+, Na+, K+, NH4+ cations in samples of drinking, mineral, natural and waste water by ion chromatography FR.1.31.2005.01738. The range of detectable concentrations is 0.10-20.00 mg/l, and for the determination of anions, the method of measuring the mass concentration of Cl-, SO4-, NO3- in samples of drinking, mineral, natural and wastewater by ion chromatography FR.1.31.2005.01724 was used. The range of detectable concentrations is 0.10-20.00 mg/l and the method of measuring the mass concentration of ions in samples of natural, drinking and wastewater by ion chromatography HDPE F 14.1:2:4. 132-98 was used, the range of detectable concentrations for cations is 0.10-150.00 mg/l. Measuring instruments: ion chromatographic system Stayer, detection limit for chloride ion 0.02 mg/l. The main results of the conducted research are, as follows: Sodium and calcium soluble cations significantly predominate in the ionic composition of IW-17, reaching 24.15 and 53.16 mg/l, respectively, in the one sample. In the same sample, chlorine anions reach 34.51 mg/l. The average concentration of sulfate soluble anions is 2-3 mg/l. Sodium and calcium cations significantly predominate in the ionic composition of IW-20, reaching 7.27 and 50.0 mg/l, respectively, in one sample. In the same sample, chlorine anions reach 13.72 mg/l. The average concentration of sulfate anions is 2-4 mg/l, reaching 22.24 mg/l. The content of calcium soluble cations is 6-20 mg/l (calcium soluble cations rarely reaching 42-53 mg/l), the concentration of potassium cations is 0.7-3 mg/l. Sodium and calcium cations significantly predominate in the ionic composition of IW-20, reaching 7.27 and 50.0 mg/l, respectively, in one sample. In the same sample, chlorine anions reach 13.72 mg/l. The average concentration of sulfate anions is 2-4 mg/l, reaching 22.24 mg/l. The content of calcium soluble cations is 6-20 mg/l (rarely reach 42-53 mg/l), the concentration of potassium cations is 0.7-3 mg/l.The ice wedges, named IW-17 and IW-20, were sampled with cordless drills from BOSCH GSR 18V-EC TE and Makita DDF481RTE 188 equipped with special titan drilling nozzles. Ice for isotope analysis was sampled along the vertical axes of exposed IWs with steps through each 0.2-0.3 m.For samples from ice, a method was used to measure the mass concentration of Ca2+, Mg2+, Na+, K+, NH4+ cations in samples of drinking, mineral, natural and waste water by ion chromatography FR.1.31.2005.01738. For the determination of anions, the method of measuring the mass concentration of Cl-, SO4-, NO3- in samples of drinking, mineral, natural and wastewater by ion chromatography FR.1.31.2005.01724 was used. The method of measuring the mass concentration of ions in samples of natural, drinking and wastewater by ion chromatography HDPE F 14.1:2:4. 132-98. Measuring instruments: ion chromatographic system "Stayer", detection limit for chloride ion 0.02 mg/l.
description: Data was submitted and proofread by Yurij K Vasil'chuk and Lyubov Bludushkina at the faculty of Geography, department of Geochemistry of Landscapes and Geography of Soils, Lomonosov Moscow State University.