Estimation excess risk cancer due to natural gamma radiation exposure in outdoor areas for residents of Dargaz city in 2016

Authors

  • Ghorbannezhad, F Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
  • Jonidi Jafari, A Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran AND Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
  • Rastegar, A Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran AND Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
Abstract:

Background and Objective: Humans are always exposed to ionizing radiation that could potentially have harmful effects. The aim of this study was to evaluate the background gamma dose rate, the estimated annual effective dose, and the excess cancer risk assessment in Dargaz. Materials and Methods: This study was a cross sectional study which was conducted in January- March and July – September 2016. In this study, 5 stations (4 in the main geographical directions and 1 in the center city) were selected based on the map of the city to determine the dose rate of background gamma radiation in outdoor areas. A dosimeter was used (Geiger Müller detector STEP OD-02 with sensitivity of 0-2000 mSv/h) to measure gamma rays. The device was designed to monitore X-rays, gamma rays and beta rays. Results: The results showed that the maximum and minimum mean values of background gamma dose rate were 147±12 nSv/h and 113±11 nSv/h in the center and west-direction of the city, respectively. The annual effective dose for Dargaz residents in outdoor was determined to be 0/15 mSv/yr, and the amount of excess lifetime cancer risk was estimated as 0.6×10-3. Conclusion: The results indicated that there are significant differences between the rates dose in the center and other parts of the city (p≤0.05).  

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Evaluation of Natural Radionuclide content in Nile River Sediments and Excess Lifetime Cancer Risk Associated with Gamma Radiation

Introduction: This Study has was  carried out to measure and detect the natural occurred radionuclide content including 226Ra, 232Th and 40K in the  Nile River sediments at various locations in Upper Egypt, from Aswan to El-Minya. Additionally, we determine the absorbed dose rate, the annual effective dose equivalent, and excess lifetime cancer risk also has been calculated. Material and Metho...

full text

بررسی آهنگ دوز گامای محیطی و برآورد خطر مازاد ابتلا به سرطان ناشی از دریافت پرتو گاما در ساکنان شهر سبزوار در سال 1393

Background: Background gamma radiation levels vary in different locations and depended on many factors such as radiation properties of soil, building materials as well as construction types which human lives on it. People are always exposed to ionizing radiation, which could badly influence their health. The aim of this study was to evaluate the background gamma-ray dose rate and the estimated ...

full text

Natural environmental gamma radiation exposure and prevalence of breast cancer in Poços de Caldas, MG, Brazil

Background: Environmental ionizing radiation has been associated with increased cancer risk by several studies.  The Brazilian city of Poços de Caldas, MG, seats on a huge deposit of uranium, which was until recently mined.  We performed a retrospective analysis of  310 cases of patients with breast cancer, who were exposed for at least ten years to different levels of ion...

full text

Risk Estimation of Hepatocellular Carcinoma due to Exposure to Aflatoxins in Maize from Yogyakarta, Indonesia

Background: Besides their mutagenic, carcinogenic, and teratogenic effects, Aflatoxins (AFs) also act as the main contributor to hepatocellular carcinoma (HCC) which is known as the most common primary liver cancer worldwide. The main aim of this study was risk estimation of HCC due to exposure to aflatoxins in maize from Yogyakarta, Indonesia. Methods: As a model, maize samples were taken fro...

full text

Gamma Radiation Measurement due to Natural Radioactivity in Hot Water Spring of Behbahan

Introduction: Many people use hot water springs to treat some diseases, such as rheumatism, arthritis, and skin diseases, but they are unaware of the presence of natural radioactive substances that may be found in hot water springs. An effective way to understand the radiation risk of these elements are measuring the dose rate of radiation. In this study, for the first time, ga...

full text

Is Induction of Anomalies in Lymphocytes of the Residents of High Background Radiation Areas Associated with Increased Cancer Risk?

Man has been exposed to different levels of natural background radiation since the creation of human life. There are inhabited areas around the world with extraordinary levels of natural background radiation. The level of natural radiation in these areas is up to two orders of magnitude higher than other places. Areas such as Yangjiang, China; Guarapari, Brazil; and Kerala, India are among the ...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 12  issue 2

pages  185- 192

publication date 2019-09

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

No Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023