Biogeochemical Assessment of Toxicity and Radioecological Danger of the Transboundary Kara-Balta River B. Djenbaev, V. Solodukhin, B. Kaldybaev, B. T. Zholboldiev, S. Lennik, M. Severinenko, W. J. Karmysheva Geochemistry International, 2023 Abstract—The paper presents the results of researches of the concentration of chemical elements and natural radionuclide in the environmental objects of the Kara-Balta transboundary river basin (adjacent territories of Kyrgyzstan and Kazakhstan). The level of contamination of floodplain soils and bottom sediments of the Kara-Balta River with such chemical elements as U, Sb, As, Th, Pb, Sc, Co, Cu, Mo, Zn, V, Sr, Ba, Cs was established. Based on the calculated indicators of the contamination factor (CF), enrichment factor (EF), and index of geoaccumulation (Igeo), it was found that Sb, As and Br make the largest contribution to soil and bottom sediment pollution in the Kara-Balta water basin. At three checkpoints, an increased concentrations of U, B, Li, Sr, Mo were found in the water samples of the region’s reservoirs, which is related to the influence of the tailings of the Kara-Balta mining plant. The elevated concentrations of As, B, Ba, Co, Mn, Sb, V, and Zn were also established around the mouth of the Kara-Balta River, which flows into the Tasotkel reservoir (Kazakhstan). The results of the research can be explained by the fact that a significant part of the Kara-Balta transboundary river basin is located in the zone of a uranium natural–technogenic province.
Radiobiogeochemical research of the Karakol River basin in the Issyk-Kul region, Kyrgystan Kymbat Ibraeva, Bakyt Kaldybaev E3s Web of Conferences, 2019 This paper presents the results of radioecological research of the Karakol River basin in Issyk-Kul region of Kyrgystan. The Karakol River has a snow-glacier feed, the chemical concentration of the water is slightly mineralized and it is of calcium-hydrocarbonate-sulfate type. The concentration of radionuclide was determined in soil, water, river bottom sediments and the city of Karakol. The values of concentrations are varied within the natural regional background, but a significant increase of the specific activity of radionuclides was observed in the estuary zone of the river. The map of the level of the exposure dose of the territory of the city of Karakol was compiled with the help of the computer program "Surfer-12".
Assessment of the vulnerability of the population on sari-dzhas autonomous focus of plague, Kyrgyzstan Антон Шабунин, Anton Shabunin, Гульмира Сариева, Gulmira Sariyeva, Сабиржан Абдикаримов, Sabirzhan Abdikarimov, Равшан Маймулов, Ravshan Maimulov, Гульнара Базарканова, Gulnara Bazarkanova, Айгуль Джапарова, Aygul Dzhaparova, Зият Абдел, Ziyat Abdel, Заурбек Сагиев, Zaurbek Sagiyev, Райхан Мусагалиева, Raikhan Mussagaliyeva, Айгуль Абдирассилова, Aigul Abdirassilova, Жаркынай Айтбаева, Zharkinay Aytbaeva, Бакыт Калдыбаев, Bakyt Kaldybaev Acta Biomedica Scientifica, 2017 and calculates indices for each sector of the natural focus of the plague. As a result of the work, the final map of the Index of the epidemiological vulnerability of the Sary-Jaz autonomous focus of the plague was obtained. Detail results of the assessment and the final map for the study area are given. The authors hope that the calculations and results obtained in the course of this work will find their application both for theoretical assessments of the vulnerability of various territories from plague and for practical actions to reduce vulnerability.
[The problems of radioecology and radiation safety of the former uranium production in Kyrgyzstan] Б. М. Дженбаев, Б. К. Калдыбаев, Б. Т. Жолболдиев Radiatsionnaia Biologiia Radioecologiia Rossiskaia Akademiia Nauk, 2013 В статье кратко излагаются история и проблемы бывших урановых производств (хвостохранилищ и отвалов), современное состояние и возможное их воздействие на окружающую среду. Приведены приоритетные радиоэкологические и радиобиогеохимические проблемы на среднесрочный период, а также нормативно-правовая база.
[Current status of the uranium Issyk-Kul biogeochemical provinces] Б. М. Дженбаев, Б. Т. Жолболдиев, Б. К. Калдыбаев, Т. Э. Токтоева Radiatsionnaia Biologiia Radioecologiia Rossiskaia Akademiia Nauk, 2013 В статье представлено современное радиобиогеохимическое состояние (почвенно-растительный покров и наземные воды) и проблемы Иссык-Кульской урановой биогеохимической провинции. По результатам исследований установлено, что общий уровень радиационного фона и содержание радионуклидов находятся в пределах нормы, за исключением отдельных природных и техногенных участков.
