The influence of technogenesis on the accumulation of chemical elements in the placental barrier of Tomsk region

Abstract

The paper discusses general patterns of chemical elements accumulation in the placental tissue of residents of different Tomsk agglomeration settlements (Tomsk, Asino, the settlement of Mirny, the village of Moryakovsky Zaton) as well as of Tomsk districts (Sovetsky, Leninsky, Oktyabrsky, Kirovsky) as an indicator that demonstrates a degree of human impact on the human health. The paper describes possible sources of chemical elements in the human body, depending on residence area. The chemical elements were determined to the maximum (the concentration coefficient exceeds 1,5) accumulated in the tissues of the residents of each settlement. For Tomsk they are Au, As, La, U, Br, for the village of Moryakovsky Zaton – La, As, Ca, Sc, for the village of Mirny – Hf, Sm, Ce, Au; in the city of Asino Eu reaches the maximum concentration coefficient that equals to 1,2. According to the study, the authors assumed that in the barrier system of the placenta, as in the protective mechanism of the body, chemical elements accumulate selectively, depending on their release from the envi