Natural Radioactivity in Drinking Water of Drilled Wells in Zanjan, Northwestern Iran
نویسندگان
چکیده مقاله:
Background: Many radioactive compounds may be released into the environment and hence into the drinking water supplies due to the human activities. Radionuclides can also enter the food chain if the contaminated water is used for drinking or irrigation purposes. Objective: To estimate the annual effective dose of natural radioactive materials like 226Ra and 40K in drinking water of wells in Zanjan, nortwestern Iran. Methods: 82% of drinking water in Zanjan comes from drilled wells. Water samples from the main sites of drinking water from different parts of Zanjan were collected. The amount of 226Ra and 40K were measured by gamma-ray spectrometry using a NaI (Tl) detector. The annual effective dose of the radioactive materials was calculated for children (2–7 years old) and adults (≥17 years old) with annual water intake of 350 and 500 L, respectively. The annual effective dose received by residents of the city due to consumption of the contaminated drinking water was also calculated. Results: The mean±SD concentrations of 226Ra and 40K were 32.4±7.8 and 20.5±27.4 Bq/L, respectively. The mean±SD annual effective dose received by residents of the city due to consumption of the contaminated drinking water was 7.13±1.76 and 4.59±1.12 mSv/y for children and adults, respectively. Conclusion: The level of radioactive compounds in water of drilled wells in Zanjan is significantly higher than the ICRP permissible limit of 1 mSv/y.
منابع مشابه
natural radioactivity in drinking water of drilled wells in zanjan, northwestern iran
background: many radioactive compounds may be released into the environment and hence into the drinking water supplies due to the human activities. radionuclides can also enter the food chain if the contaminated water is used for drinking or irrigation purposes. objective: to estimate the annual effective dose of natural radioactive materials like 226ra and 40k in drinking water of wells in zan...
متن کاملNatural Radioactivity of Drinking Water Resources in Arak, Iran
The activity concentrations of 235U, 232Th, 226Ra, 40K and 137Cs in ground and surface of drinking water resources in Iranian city of Arak were determined by gamma ray spectrometry with aHPGe detector setup, coaxial p type and 8192 channels MCA. The water samples differed in radioactivity content depending on their origin and place. In the ...
متن کاملNatural radioactivity of drinking water in Finland.
The mean annual effective dose from natural radionuclides for users of drilled wells was estimated to be 0.41 mSv, for users of wells dug in the ground 0.05 mSv and for people using water from waterworks 0.02 mSv. The highest effective dose from drinking water was caused by 222Rn (Fig. 2) constituting 75% and 60% of the total effective dose caused by all natural radionuclides for drilled-well u...
متن کاملRadioactivity monitoring in drinking water of Zahedan, Iran
Background: The present research has focused on the effect of radioactivity on drinking water from five sites in the region of Zahedan city. Materials and Methods: The measurement of water activity in wells, river and spring has been used as a screening method. The determination of gamma emitters was performed by use the application of gamma spectrometry. Results: The values of Radium concentra...
متن کاملnatural radioactivity of drinking water resources in arak, iran
the activity concentrations of 235u, 232th, 226ra, 40k and 137cs in ground and surface of drinking water resources in iranian city of arak were determined by gamma ray spectrometry with ahpge detector setup, coaxial p type and 8192 channels mca. the water samples differed in radioactivity content depending on their origin and place. in the drinking water samples from aman abad, mobarak abad, an...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 2 شماره 1
صفحات -
تاریخ انتشار 2012-03-01
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023