Total dissolved solids and major ions of the Late Pleistocene massive ice exposed in the northern part of the lake Hanikosito and Holocene ice wedges in the exposed outcrop on the terrace of Seyakha (Mutnaya) River, Bovanenkovskoye oil and gas condensate field.Concentrations of cations and anions in ice were measured at the chemical analytical center of the Faculty of Geography at Lomonosov Moscow State University using the ion chromatograph "Stayer". Analytical precision for chloride ions is 0.02 μg/ml, and less than 0.01 mg/l for other anions and cations.