radioactivity in some sachet drinking water samples produced in nigeria

نویسندگان

o.s. ajayi department of physics, federal university of technology ,p.m.b 704, akure, ondo state, nigeria

g. adesida department of physics, federal university of technology ,p.m.b 704, akure, ondo state, nigeria

چکیده

background: activity concentrations of 40k, 226ra and 228ra were measured in some sachet drinking water samples produced in nigeria. materials and methods: the measurement was done by using high-purity germanium (hpge) detector (canberra industries inc.). the measured activity concentrations for 226ra (u-series) and 228ra (thseries) were used with their ingested dose conversion factors to estimate annual effective doses for the international commission on radiological protection (icrp) age groups 0 – 1y, 1 – 2y, 2 – 7y, 7 – 12y, 12 – 17y and >17y from consumption of the water samples. results: measured activity concentration values varied from 0.57±0.21 to 34.08±5.61 bq l-1, 2.22±0.97 to 15.50±4.51 bq l-1 and 0.04±0.01 to 7.04±1.16 bq l-1 for the radionuclides respectively. estimated total annual effective doses varied from 4.73 to 49.13, 1.21 to 12.26, 0.86 to 8.54, 1.22 to 11.66, 3.40 to 28.98 and 0.68 to 5.04 msv y-1 for the age groups respectively. the highest total annual effective dose was found in tisco sample while the lowest was found in focar sample. conclusion: the total annual effective dose in all samples considerably exceeded the average worldwide ingestion exposure dose value of 0.12 msv y-1 from uranium and thorium series reported by the united nations scientific committee on effects of atomic radiations (unscear). therefore the nigeria populace is advised to consume less of these water samples. iran. j. radiat. res., 2009 7 (3): 151-158

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

Radioactivity in some sachet drinking water samples produced in Nigeria

Background: Activity concentrations of 40K, 226Ra and 228Ra were measured in some sachet drinking water samples produced in Nigeria. Materials and Methods: The measurement was done by using high-purity germanium (HPGe) detector (Canberra Industries Inc.). The measured activity concentrations for 226Ra (U-series) and 228Ra (Thseries) were used with their ingested dose conversion factors ...

متن کامل

Radioactivity analysis in underground drinking water sources in Niger State University of Nigeria

The activity concentration of gross alpha and gross beta particles in four samples of borehole drinking water consumed in Ibrahim Badamasi Babangida University (IBBU), Lapai, Niger State-Nigeria was measured, using a portable single channel gas free proportional counter (MPC2000B-DP) detector. This study focused on cancer related problems and the bio-data of the environment was discussed as wel...

متن کامل

Radioactivity analysis in underground drinking water sources in Niger State University of Nigeria

The activity concentration of gross alpha and gross beta particles in four samples of borehole drinking water consumed in Ibrahim Badamasi Babangida University (IBBU), Lapai, Niger State-Nigeria was measured, using a portable single channel gas free proportional counter (MPC2000B-DP) detector. This study focused on cancer related problems and the bio-data of the environment was discussed as wel...

متن کامل

Natural 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 کامل

Radioactivity 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 کامل

Natural 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 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 radiation research

جلد ۷، شماره ۳، صفحات ۱۵۱-۱۵۸

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023