Trace elements and REEs in rivers and lakes of the upper Yana River, Northern Eurasia

The helicopter-based sampling campaign took place from 22 to 24 August, 2017. All samples were sealed with Parafilm tape and stored in the field at temperatures between 5°C and 10°C in cool place, in organic topsoil, and in the laboratory, at 4°C, before the analysis. Samples for trace elements were pre-filtered through 0.22 μm cellulose acetate membrane filters before analysis. Trace elements, including REEs, were measured at the Institute of Microelectronics Technology and High Purity Materials, RAS (Chernogolovka, Russia) using ICP-MS/AES.