Affiliation:
1. Chita State Medical Academy
2. National Research Tomsk Polytechnic University
3. Institute of Natural Resources, Ecology and Cryology Siberian branch of the Russian Academy of Sciences
Abstract
Introduction. The biogeochemical environment of the territory of the Eastern Zabaikalye is characterized by excess, deficiency or unfavourable ratio of many macro- and microelements in soil, water and vegetation. This is due to the metallogenic characteristics of the region and industrial mining activities, carried out for more than three hundred years.
The aim of the study was to investigate the accumulation of chemical elements in the hair in children and to identify specifics in their distribution depending on the naturally occurring and technogenic factors.
Materials and method. Hair samples were taken from seventy nine 5-12 years children living in the areas of geochemical anomalies and in the administrative centre of the region, Chita. The elemental composition of the samples for 28 chemical elements was determined by multi-element instrumental neutron activation analysis (INAA). Statistical processing of the results was carried out using nonparametric methods, concentration coefficients were calculated relative to the regional background.
Results. In settlements (V-Shakhtaminsky, Sherlovaya Gora, Kalga, Urulyungui) located in the zone of geochemical anomalies, which formation is associated with the presence of various and numerous deposits of lead-zinc, gold-polymetallic, tin, molybdenum ore and mining operations, the maximum amount of substances with content exceeding the regional background is observed in the biosubstrate. The values of concentration ratios above the background were established for antimony, gold, arsenic, europium, ytterbium, silver, rare-earth elements, cobalt, chromium, zinc and iron.
Limitations. In studying the elemental homeostasis of children and adolescents living in natural and anthropogenic geochemical anomalies of Zabaikalsky Krai, the content of 28 chemical elements in hair was analyzed.
Conclusion. The revealed characteristics of distribution and accumulation of certain spectrum of chemical substances in biosubstrate in children and adolescents reflect both metallogenic features of each territory and technogenic impact, which allows forming an idea of a unique regional component of the elemental homeostasis in the population.
Publisher
Federal Scientific Center for Hygiene F.F.Erisman
Subject
Health, Toxicology and Mutagenesis,Public Health, Environmental and Occupational Health,Pollution,General Medicine
Reference33 articles.
1. Solodukhina M.A., Mikhaylova L.A., Lapa S.E., Burlaka N.M. Geochemical features of environment and endemic diseases of Zabaykalsky Krai. Zabaykal’skiy meditsinskiy vestnik. 2015; (4): 169–74. (in Russian)
2. Yurgenson G.A., Smirnova O.K., Solodukhina M.A., Filenko R.A. The geochemical features of ores and technosoils of tailing gold-molybdenum mine Davenda in East Transbaikalia. Litosfera. 2016; (2): 91–106. (in Russian)
3. Chechel’ L.P., Zamana L.V. Geochemical types of waters of lead-zinc deposits tailings in the Eastern Transbaikalia. Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov. 2019; (4): 17–25. https://doi.org/10.18799/24131830/2019/4/189 (in Russian)
4. Rikhvanov L.P., Soktoev B.R., Baranovskaya N.V., Ageeva E.V., Belyanovskaya A.I., Deriglazova M.A., et al. Comprehensive geochemical research of the environmental components in endemic areas of Transbaikalia. Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov. 2021; (2): 7–25. https://doi.org/10.18799/24131830/2021/2/3039 (in Russian)
5. Rafikova Yu.S., Semenova I.N., Suyundukov Ya.T., Biktimerova G.Ya., Rafikov S.Sh. Results of biomonitoring for trace elements in children of the mining region of Bashkortostan. Gigiena i Sanitaria (Hygiene and Sanitation, Russian journal). 2018; 97(3): 245–50. https://doi.org/10.18821/0016-9900-2018-97-3-245-250 (in Russian)