The paper provides research results of Cs and Sr radionuclides concentrations in bodies of Lacertidae family lizards, inhabiting different parts of Semipalatinsk Test Site, and the parameters of these radionuclides' transfer into lizards' bodies. It shows that high activity concentration of radionuclides in lizards' bodies can be noticed if they live directly at locally contaminated areas. Since the distance from contaminated spots exceeds home range of the studied animals, no increased values of radionuclides' activity were found in the animal bodies. At some individual radioactively contaminated spots, very high activity concentrations of Sr radionuclide up to 7.8 × 10 Bq kg were found in lizards. So under certain conditions, lizards can significantly contribute to radionuclides redistribution in the natural environment. Mean concentration ratios (CR) of radionuclides were as follows: Cs-6.2 × 10, Sr-1.1 × 10.
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http://dx.doi.org/10.1016/j.jenvrad.2016.04.034 | DOI Listing |
J Radiat Res
January 2025
International Agency for Research on Cancer, Environment and Lifestyle Epidemiology Branch, Av. Tony Garnier, Lyon 69007, France.
Between 1949 and 1962 the Soviet Union performed atmospheric tests of nuclear weapons at the Semipalatinsk nuclear test site (SNTS) in Kazakhstan, resulting in widespread contamination of the surrounding region with radioactive fallout. Settlements in the southeast Abai oblast of Kazakhstan, close to the border with China, are not thought to have received significant fallout from the SNTS. There is, however, evidence that the study area, including Makanchi, Urdzhar and Taskesken villages, was contaminated by atmospheric nuclear tests performed by China at the Lop Nor NTS between 1964 and 1980.
View Article and Find Full Text PDFLittle is known about the impact of environmental pollution on thyroid function in the non-occupationally exposed population of Kazakhstan. This study aimed to investigate serum levels of thyroxine (T4), thyroid-stimulating hormone (TSH), and anti-thyroid peroxidase (TPO) antibodies in the environmentally exposed population of Kazakhstan in relation to symptoms of anxiety. A total of 1,388 nominally healthy individuals residing in areas exposed to three major types of environmental pollution prevalent in Kazakhstan-non-ferrous metallurgy, condensate gas extraction, and activities of the Semipalatinsk Nuclear Test Site (SNTS)-were enrolled.
View Article and Find Full Text PDFEnviron Toxicol Pharmacol
January 2025
Nazarbayev University School of Medicine, Astana, Kazakhstan.
Biochemical blood parameters may serve as biomarkers of environmental pollution, with somatoform disorder (SD) being of interest. This study examined serum glycosylated hemoglobin (HbA1C), insulin, total protein, and SD prevalence in populations from polluted areas in Kazakhstan. It assessed the predictive value of these parameters for SD, along with other risk factors.
View Article and Find Full Text PDFChemosphere
November 2024
Department of Mass Spectrometry, Institute of Nuclear Physics Polish Academy of Sciences, Ul. Radzikowskiego 152, 31-342 Kraków, Poland.
Cryoconite, granule-shaped debris found on the surface of glaciers, is known for trapping substantial quantities of pollutants such as radioactive nuclides and heavy metals. This study investigates contamination levels, sources and spatial variability of natural and artificial radioisotopes in cryoconite from Mittivakkat Gletsjer in southeast Greenland by determining the activity and atomic ratios of selected radionuclides. The maximum activity concentrations of artificial radioisotopes were 1129 ± 34 Bq kg for Cs, 3.
View Article and Find Full Text PDFEcotoxicol Environ Saf
December 2024
Branch 'Institute of Radiation Safety ad Ecology' RSE NNC RK, Kurchatov, Kazakhstan.
Numerous areas of the Semipalatinsk Test Site (STS) were subjected to radioactive contamination, including tritium. The tritium content in plants was determined in free water (TFWT) and in the organic component (OBT). It has been established that the OBT content in plants for the "Sary-Uzen" site between combat boreholes ranges from <7-125 Bq/kg and the background OBT content is 21.
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