Lead in the Landscapes of Ulaanbaatar City (Mongolia)

摘要

The article deals with lead contamination of the air, snow cover, soils, and woody vegetation in Ulaanbaatar evaluated against the background concentrations and established norms (maximum permissible concentration, MPC). Strong air pollution during the period from December to March is detected. The features of the diurnal variation and average concentrations of Pb in the air are addressed. The assessment of the state of the snow cover indicates strong technogenic pollution of the atmosphere in winter. Weak geochemical transformation of the soil-plant cover as compared to the background values is revealed but with local Pb anomalies, that are related with the motor vehicle emissions and exceed the norms.