ESTIMATION OF INDOOR AND OUTDOOR EFFECTIVE DOSES AND LIFETIME CANCER RISK FROM GAMMA DOSE RATES IN AND AROUND MANDYA DISTRICT, KARNATAKA

Autor:	T S Shashikumar, M N Ramachandra, null Chandrashekar, Shivalinge Gowda
Rok vydání:	2022
Předmět:	Radiation Radiological and Ultrasound Technology Neoplasms Public Health Environmental and Occupational Health Humans India Radiology Nuclear Medicine and imaging General Medicine
Zdroj:	Radiation Protection Dosimetry. 198:1540-1545
ISSN:	1742-3406 0144-8420
DOI:	10.1093/rpd/ncac199
Popis:	Indoor and outdoor gamma-ray dose rates have been measured in and around Mandya district (12° 20″ N and 77° 20″ E). The measurements were carried out from 45 locations of Mandya district at 1 m above the ground surface for radiometric, geophysical and environmental surveys using a lightweight portable radiation dosemeter ER‑709. The indoor and outdoor absorbed gamma dose rate in air varied from 66.12±0.8 to 131.89±5.5 nGy per h with a geometrical mean value of 97.79±2.6 nGy per h and 45.94±0.7 to 80.39±2.6 nGy per h with a geometrical mean value of 58.75±1.5. The indoor and outdoor effective doses vary from 0.32 to 0.65 mSv per y with a geometric mean value of 0.48 mSv per y and 0.06 to 0.10 mSv per y with a geometric mean value of 0.07 mSv per y which is slightly higher when compared with the worldwide average of the effective doses. The indoor and outdoor excess lifetime cancer risk (ELCR) of residents along the different locations varies from 1.14 × 10−3 to 2.26 × 10−3 with a geometric mean value of 1.68 × 10−3 and 0.20 × 10−3 to 0.35 × 10−3 with a geometric mean value of 0.25 × 10−3 which is similar to the worldwide average of the ELCR.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13d76a3f1f2d38783fdc13715287fa21 https://doi.org/10.1093/rpd/ncac199 Zobrazit plný text záznamu