~222Rn concentration changes in medicinal groundwaters of Ladek Zdroj (Sudety Mountains, SW Poland)

摘要

Ladek Zdroj in southwestern Poland is place where thermal groundwaters, regarded as medicinal, outflow. They contain, amongst in the area of their outflow to the surface. Distinct fluctuations in its concentrations with time (from 35 to 55/100) are characterised by irregularity and vary for particular intakes, showing a non-changing trend (Dabrowka intake), a falling trend (Chrobry, Sklodowska-Curie, L-2 intakes) or a growing trend (Jerzy and Wojciech intakes) in the last several tens of years, although the waters are of the same hydrochemical type and flow out of the same hydrogeological structure.