assessment of effective dose equivalent from internal exposure to 222rn in ramsar city

نویسندگان

tayyeb allahverdi pourfallah biochemistry and biophysics dept., faculty of medicine, mazandaran university of medical sciences, sari, iran

maryam shahidi biochemistry and biophysics dept., faculty of medicine, mazandaran university of medical sciences, sari, iran

چکیده

introduction in this study, effective dose equivalent for the public due to internal exposure to 222radon (222rn) was evaluated in three regions of ramsar, a northern coastal city in iran.                                materials and methods measurements were carried out using a radon monitoring device. outdoor and indoor radon concentrations were measured within 24 hours with an integration interval of 3 hours. regions were selected with respect to our previous study on areas of ramsar with high levels of environmental background radiation. results this study showed that indoor 222rn concentration reached to 465 bq/m3 in one of the selected regions (talesh mahalleh) in early morning (5-8 a.m.). our study also showed that the average effective dose equivalents (due to both indoor and outdoor exposures) in the selected regions (talesh mahalleh, sadat mahalleh, and chaparsar) were 9.5±2.8, 5.1±2.1, and 3.2±1.2 msv/y, respectively. conclusion it is clear that the annual effective dose from internal exposure to 222rn in areas of ramsar with high levels of natural radiation was significantly higher than the maximum annual effective dose permissible for public.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Assessment of Effective Dose Equivalent from Internal Exposure to 222Rn in Ramsar City

Introduction In this study, effective dose equivalent for the public due to internal exposure to 222radon (222Rn) was evaluated in three regions of Ramsar, a northern coastal city in Iran.                                Materials and Methods Measurements were carried out using a radon monitoring device. Outdoor and indoor radon concentrations were measured within 24 hours with an integration in...

متن کامل

Assessment of Effective Dose Equivalent from Internal Exposure to 222Rn in Ramsar City

Introduction In this study, effective dose equivalent for the public due to internal exposure to 222 radon ( 222 Rn) was evaluated in three regions of Ramsar, a northern coastal city in Iran. Materials and Methods Measurements were carried out using a radon monitoring device. Outdoor and indoor radon concentrations were measured within 24 hours with an integration interval of 3 hours. Regions w...

متن کامل

Short report, Estimation of annual effective dose from 226Ra and 228Ra due to consumption of foodstuffs by inhabitants of Ramsar city, Iran

 ABSTRACTBackground: 226 Ra and 228 Ra contents in foodstuffs of Ramsar which is a coastal city in the northern part of Iran were determined by gamma spectrometry. Measurement results together with food consumption rates were used to estimate annual effective dose from  226 Ra and 228 Ra, due to consumption of food stuffs by inhabitants of Ramsar city.Materials and Methods: A total of 33 sample...

متن کامل

the role of russia in transmission of energy from central asia and caucuses to european union

پس ازفروپاشی شوروی،رشد منابع نفت و گاز، آسیای میانه و قفقاز را در یک بازی ژئوپلتیکی انرژی قرار داده است. با در نظر گرفتن این منابع هیدروکربنی، این منطقه به یک میدانجنگ و رقابت تجاری برای بازی های ژئوپلتیکی قدرت های بزرگ جهانی تبدیل شده است. روسیه منطقه را به عنوان حیات خلوت خود تلقی نموده و علاقمند به حفظ حضورش می باشد تا همانند گذشته گاز طبیعی را به وسیله خط لوله مرکزی دریافت و به عنوان یک واس...

15 صفحه اول

Lifetime Effective Dose Assessment Based on Background Outdoor Gamma Exposure in Chihuahua City, Mexico

Determining ionizing radiation in a geographic area serves to assess its effects on a population's health. The aim of this study was to evaluate the spatial distribution of the background environmental outdoor gamma dose rates in Chihuahua City. This study also estimated the annual effective dose and the lifetime cancer risks of the population of this city. To determine the outdoor gamma dose r...

متن کامل

Assessment of dose equivalent due to neutrinos.

Neutrinos are present in the natural environment and are also produced by particle accelerators. A recent hypothesis has also been proposed that asserts that ionizing radiation due to neutrinos from certain astronomical events may have led to the extinction of some biological species. Thus, it is of interest to be able to estimate the dose equivalent due to these weakly interacting particles. P...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
iranian journal of medical physics

جلد ۱۲، شماره ۱، صفحات ۳۶-۴۲

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023