Source apportionment and spatial distribution of heavy metals in atmospheric settled dust of Ulaanbaatar, Mongolia.

Atmospheric settled dust study was conducted with the purpose of to determine the source of heavy metal elements (As, Co, Cr, Cu, Ni, Pb, and Zn) in airborne dust from Ulaanbaatar using the multivariate analysis and spatial distribution mapping by geographic information system (GIS) with the systematic grid. A total of 57 dust samples were collected from the impervious surfaces at 2-4 m above the ground in January of 2020. The mean concentrations of heavy metals were increasing order of Co-10.

Sources and Characteristics of Polycyclic Aromatic Hydrocarbons in Ambient Total Suspended Particles in Ulaanbaatar City, Mongolia.

The purpose of this study was to identify pollution sources by characterizing polycyclic aromatic hydrocarbons from total suspended particles in Ulaanbaatar City. Fifteen polycyclic aromatic hydrocarbons were measured in total suspended particle samples collected from different sites, such as the urban center, industrial district and ger (Mongolian traditional house) areas, and residential areas both in heating (January, March), and non-heating (September) periods in 2017. Polycyclic aromatic hydrocarbon concentration ranged between 131 and 773 ng·m in winter, 22.