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  • Title: COMPLEX RADIATION AND HYGIENIC MONITORING OF POPULATION ON RADIOLOGICALLY CONTAMINATED TERRITORIES OF ZHYTOMYR OBLAST IN 2021.
    Author: Vasylenko VV, Kuriata MS, Morozov VV, Lytvynets LO, Kramarenko MS, Misсhenko LP, Bilonyk AB, Man ZS, Schwartzman VS.
    Journal: Probl Radiac Med Radiobiol; 2022 Dec; 27():150-166. PubMed ID: 36582087.
    Abstract:
    OBJECTIVE: the key factors identification in radiation dose formation in population of radiologically contaminatedareas of Zhytomyr oblast in the current period of accident through complex radiation and hygienic monitoring in reference settlements in 2021. MATERIALS AND METHODS: For complex radiationhygienic monitoring in Zhytomyr oblast, 10 settlements were chosen - Narodychi, Selets, Bazar, Rudnya Bazarska, Khrystynivka - zone 2, Motiyki, Zalissya, Davydky, Radcha, Nova Radcha - zone 3 of Narodychi district, in which the highest radiation doses were recorded after the accident at the Chornobyl Nuclear Power Plant. The research was carried out in June 2021. In order to determine the doses of internal radiation, 645 measurements were performed on whole body counters (WBC) (478 adults and 167 children). The 44 samples of milk, 45 samples of potatoes and vegetables, and 38 samples of wild products were collected in local farms and measured for the 137Cs and 90Sr content. Residents of the studied settlements (n = 220, 175 adults, and 45 children) were interviewed about the levels of consumption of staple foodstuffs. External radiation doses were evaluated in all the studied settlements. Mathematical, dosimetry, and radiochemical methods were applied. RESULTS AND CONCLUSIONS: Annual effective radiation doses of Zhytomyr oblast population in 2021 were formedmainly due to internal radiation ones that not exceeded 1.8 mSv * year-1 in adults and 0.5 mSv * year-1 in children against the radiologically contaminated territories (RCT) criterion of 1 mSv * year-1. Intake of 137Cs with milk and wild mushrooms, which traditionally occupy a significant part of diet in Zhytomyr oblast area and have consistently high levels of radioactive cesium contamination, remains a key factor of internal radiation dose forming in residents of the surveyed settlements of Zhytomyr oblast. Metoiu doslidzhennia ie vyznachennia osnovnykh chynnykiv formuvannia doz oprominennia naselennia radioaktyvno zabrudnenykh terytoriĭ Zhytomyrs'koï oblasti na potochnomu etapi avariï na osnovi provedennia kompleksnogo radiatsiĭnogigiienichnogo monitoryngu v repernykh naselenykh punktakh u 2021 r. Materialy i metody. Dlia kompleksnogo radiatsiĭnogigiienichnogo monitoryngu u Zhytomyrs'kiĭ oblasti bulo obrano 10 naselenykh punktiv (NP) - smt Narodychi, ss. Selets', Bazar, Rudnia Bazars'ka, Khrystynivka - 2ga zona, ss. Motiĭky, Zalissia, Davydky, Radcha, Nova Radcha - 3tia zona, Narodyts'koï OTG, v iakykh pislia avariï na ChAES reiestruiut'sia naĭbil'shi dozy oprominennia. Doslidzhennia vykonani u chervni 2021 r. Z metoiu vyznachennia doz vnutrishn'ogo oprominennia vykonano 645 vymiriuvan' na lichyl'nykakh vyprominiuvannia liudyny (LVL) (478 doroslykh i 167 diteĭ). U mistsevykh gospodarstvakh zibrano ta vymiriano na vmist 137Ss, 90Sr 44 proby moloka, 45 prob kartopli,38 prob produktiv dykoï pryrody. Opytano shchodo rivniv spozhyvannia osnovnykh produktiv kharchuvannia 220 meshkantsiv (175 doroslykh i 45 diteĭ). V usikh NP provedeno roboty z otsinky doz zovnishn'ogo oprominennia. V roboti vykorystano matematychni, dozymetrychni, radiokhimichni metody. Rezul'taty ta vysnovky. Richni efektyvni dozy oprominennia naselennia Zhytomyrs'koï oblasti v 2021 rotsi formuiut'sia v osnovnomu za rakhunok doz vnutrishn'ogo oprominennia, iaki ne perevyshchuiut' 1,8 mZv * rik-1 u doroslykh ta 0,5 mZv * rik-1 u diteĭ pry kryteriiu radioaktyvno zabrudnenykh terytoriĭ 1 mZv * rik-1. Osnovnym chynnykom, iakyĭ formuie dozu vnutrishn'ogo oprominennia meshkantsiv obstezhenykh NP Zhytomyrs'koï oblasti, zalyshaiet'sia nadkhodzhennia 137Cs v organizm z molokom i lisovymy produktamy, iaki tradytsiĭno stanovliat' suttievu chastynu kharchovogo ratsionu, i maiut' nezminno vysoki rivni zabrudnennia radiotseziiem.
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