Mutagenic activity of soil samples of Ulaanbaatar / Эрүүл мэндийн лаборатори

ABSTRACT

AbstractThe world population rising very fast and it has resulted in increasing the area of polluted soil, water and air. In order to cater to the demands of the people, the rapid expansion of industries, vehicles, etc. is necessary. But all of these developments make our world, especially urban area,heavily polluted. And many kind of contaminant substances showing bad effects to human health. Our research work aimed to evaluate Ulaanbaatar city soil contamination using sanitary microbiological and genetoxicological studies.The soils samples used in this study were collected from Ulaanbaatar city areas, from 5 points soil from the residential area of Ulaanbaatar; soil from city food market; soil from the area along the city highway; sludge of the city water treatment facilities; soil from the downtown. Genotoxicological effect of soil contaminant substances or ability to cause a mutation to living organisms was determined by Eims test and DNA damaging experiment on test strain Salmonella thyphimurium TA-100 (his G46, rfa B, bio pKm 101) and Escherichia coli (wp, uvr, pol). The result revealed that Ulaanbaatar city soil samples have inhibition effect to test strain growth rate.From our research work, we are making the following conclutions1.Water and organic solvent solution of Ulaanbaatar soils have a high microbial growth inhibition rate. In particular, soil from the residential area has shown higher rate.2.Mutagenic activity of natural soil samples of Ulaanbaatar area was studied in bacterial test-systems. Soil samples revealed no mutagenic effect.