Geochemical works using the passive adsorption technique are carried out along profiles or along a uniform network.
The scale of research corresponds to the zonal-regional stage of research, and also depends on the shape and size of the expected objects
At the planned points, the installation of sorbers (Geochemical samples) is carried out into the near-surface layer of soil to a depth of 30 – 40 cm. Then each sorber is saturated with hydrocarbon vapors for 17 days. Then it is placed in a sterile container, marked and sent for analysis to the laboratory.