Аннотация
The study investigates the concentration of chemical elements in biological tissues (placenta and blood) of women from the Akmola region, Kazakhstan to assess the impact of environmental pollution on maternal and newborn health.The research conducted from 2018 to 2021 involved 67 placental and umbilical cord blood samples collected from women in four Akmola districts.The study utilized instrumental neutron activation analysis and electronic microscopy to determine the concentration of 28 chemical elements.Statistical methods were applied to analyze the distribution, including the mean values, standard deviations, and frequency distribution curves.Significant variability in chemical element concentrations was observed across samples, with notable differences in rare earth elements and heavy metals.Elements such as sodium (Na), calcium (Ca), and chromium (Cr) displayed high variation.The study identified a strong environmental influence on the accumulation of toxic elements in the placenta and blood.The accumulation of chemical elements in biological tissues was heterogeneous, influenced by natural and anthropogenic factors.Blood was found to be more sensitive to environmental contamination compared to the placenta, indicating the need for enhanced environmental health monitoring in the region.