natural gamma radiation in primary schools of zanjan province

نویسندگان

mohammad reze mehrasbi department of environmental engineering, school of public health, zanjan university of medical sciences.

faranak saghatchi department of radiology, school of paramedical sciences, zanjan university of medical sciences

zahra khodaei department of environmental engineering, school of public health, zanjan university of medical sciences

jose luis gutierrez-villanueva faculty of medicine, radon group. university of cantabria 39011 santander (spain).

چکیده

background; environmental gamma ray refers to the gamma radiation from terrestrial sources and building materials. in enclosed spaces radiation can become a health hazard leading to potential increase in the rates of lung cancer. the goal of this study is to assess the exposure to natural gamma radiation of children in the schools of zanjan province. method; the natural gamma radiation was assessed in 46 primary schools of zanjan province. a total number of 75 classrooms were studied. the measurements were performed in classrooms and schoolyards using a geiger–muller detector (rds-110). alongside radiation measurements, all the data corresponding to the characteristics of each school building were collected. results; the results showed that the outdoor dose rate ranged from 82 to 106nsv h-1 while gamma dose rate due to inside classrooms ranged from 106 to 137nsvh-1. the findings represented that the highest indoor gamma dose rate belonged to the buildings of more than 30 years and metal frame and brick (p<0.05). conclusion;we concluded that the effective dose due to gamma radiation from terrestrial sources and building materials for students of primary schools in zanjan province (0.83 msv) was higher than worldwide average of the annual effective dose (0.48 msv).

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

Natural Gamma Radiation in Primary Schools of Zanjan Province

Background: Environmental gamma ray refers to the gamma radiation from terrestrial sources and building materials. In enclosed spaces radiation can become a health hazard leading to potential increase in the rates of lung cancer. The goal of this study is to assess the exposure to natural gamma radiation of children in the schools of Zanjan province. Method:The natural gamma radiation was asse...

متن کامل

Natural Gamma Radiation and Effective Annual Dose in Hot Springs in South Khorasan Province, Iran

Background and purpose:  Background radiation exists naturally in the environment and human has been always exposed to it. These rays can affect living creatures and cause chromosomal damage, and genetic and somatic diseases. Hot water springs are a major source of background radiation. This study aimed at investigating the absorbed dose of environmental gamma and determining the annual effecti...

متن کامل

Evaluation of Combination of Natural and Artificial Lighting Condition in Primary Schools (Case Study: Baneh City of Kurdistan Province, Iran)

Background & Aims of the Study: Promoting the health and safety is an important part of the fundamental mission of schools and one factor in designing and operating schools that always has been important is lighting. As students spend considerable hours in the classroom and school, lighting should be designed appropriately and in accordance with the standards, to protect them...

متن کامل

Gamma background radiation in Yazd province A preliminary report

 ABSTRACTBackground: There are relatively rich uranium mines in regions of Saghand and Bafgh in Yazd province. This survey was carried out to provide a map of ambient gamma radiation of Yazd province and the probable effects of the existence of these mines on background radiation dose rates.Materials and Methods: The measurements of the outdoor and indoor–environmental exposures (including cosm...

متن کامل

Gamma background radiation measurement in Lorestan province, Iran

Background: The exposure of human being to ionize radiation from natural sources is a continuing, inescapable feature of life on earth. Direct measurement of absorbed dose rates in air has been carried out in many countries of the world during the last few decades. Such investigations can be useful for assessment of public dose rates, the performance of epidemiological studies, and kee...

متن کامل

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.&nbsp; The Brazilian city of Po&ccedil;os de Caldas, MG, seats on a huge deposit of uranium, which was until recently mined.&nbsp; We performed a retrospective analysis of&nbsp; 310 cases of patients with breast cancer, who were exposed for at least ten years to different levels of ion...

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:
مجله انسان، محیط زیست و ارتقاء سلامت

جلد ۱، شماره ۳، صفحات ۱۳۰-۱۳۷

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023