scholarly journals Radiocaesium activity concentrations in potatoes in Croatia after the Chernobyl accident and dose assessment

2007 ◽  
Vol 42 (2) ◽  
pp. 211-217 ◽  
Author(s):  
Zdenko Franić ◽  
Branko Petrinec ◽  
Gordana Marović ◽  
Zrinka Franić
Keyword(s):  
Chernobyl Accident ◽  
Dose Assessment ◽  
Activity Concentrations

MEASUREMENT OF THE ACTIVITY CONCENTRATIONS OF GAMMA EMITTING RADIONUCLIDES IN TOOTHPASTE SAMPLES AND ASSESSMENT OF THE CORRESPONDING ANNUAL EFFECTIVE DOSES

2021 ◽  
Author(s):  
Anas M Ababneh ◽  
Qutad M Samarah
Keyword(s):  
Effective Dose ◽  
Oral Hygiene ◽  
Annual Effective Dose ◽  
Daily Basis ◽  
Dose Assessment ◽  
Accidental Ingestion ◽  
Activity Concentrations ◽  
Effective Doses

Abstract It is inevitable that we are exposed to radiation daily from various sources and products that we consume on daily basis. The use of toothpaste for oral hygiene is one of the most common daily practices by humans and yet very little data are available regarding its radiation content. In this work, we investigated the concentrations of gamma emitting radionuclides in toothpaste samples consumed in Jordan. 40K and 226Ra were detected in almost one-third of the samples, whereas 228Ra was detected in nearly half of them. The corresponding activity concentrations in the detected samples were in the ranges of 68.7–154.2, 4.6–14.1 and 1.3–10.0 Bq/kg, respectively. Dose assessment of accidental ingestion of toothpaste for children and adults was made, and its contribution to the annual effective dose was found to be very minimal with maximum doses of ~2.9 and 1.3 μSv for children and adults, respectively.

210Po and 210Pb activity concentrations in Greenlandic seabirds and dose assessment

2020 ◽  
Vol 712 ◽  
pp. 136548 ◽  
Author(s):  
Violeta Hansen ◽  
Anders Mosbech ◽  
Jens Søgaard-Hansen ◽  
Frank Farsø Rigét ◽  
Flemming Ravn Merkel ◽  
...  
Keyword(s):  
Dose Assessment ◽  
Activity Concentrations ◽  
210Pb Activity

NATURAL RADIOACTIVITY MEASUREMENT AND DOSE ASSESSMENT OF BEACH PLACER SANDS IN THE COASTAL REGION OF TAMIL NADU (INDIA)

2019 ◽  
Vol 184 (3-4) ◽  
pp. 409-412
Author(s):  
N Veerasamy ◽  
S K Sahoo ◽  
K Inoue ◽  
M Fukushi ◽  
H Tsuruoka ◽  
...  
Keyword(s):  
Tamil Nadu ◽  
Coastal Region ◽  
Dose Assessment ◽  
Dose Rates ◽  
Average Value ◽  
Activity Concentrations ◽  
Tamil Nadu State ◽  
Preliminary Study ◽  
Annual Effective Dose Rate ◽  
Ambient Dose

Abstract A preliminary study was carried out to determine the radioactivity concentration of 232Th, 226Ra and 40K in beach placer sands from 13 locations along the coast line of Tamil Nadu state, India. The ambient dose rates varied from 9 to 467 nGy h−1. The activity concentrations of radionuclide 232Th, 226Ra and 40K ranged from 5.2 to 683 Bq kg−1, 13 to 198 Bq kg−1 and 107 to 421 Bq kg−1, respectively. The annual effective dose rate ranges from 27 to 620 μSv y−1 and was higher at seven beaches in comparison to the UNSCEAR annual worldwide average value.

210Po and 210Pb activity concentrations in Mytilus galloprovincialis from Croatian Adriatic coast with the related dose assessment to the coastal population

Chemosphere ◽  
2012 ◽  
Vol 87 (11) ◽  
pp. 1295-1300 ◽  
Author(s):  
Martina Rožmarić ◽  
Matea Rogić ◽  
Ljudmila Benedik ◽  
Marko Štrok ◽  
Delko Barišić ◽  
...  
Keyword(s):  
Mytilus Galloprovincialis ◽  
Dose Assessment ◽  
Coastal Population ◽  
Activity Concentrations ◽  
210Pb Activity ◽  
Adriatic Coast

scholarly journals Natural Radioactivity and dose Assessment in Sand and Sediment Samples from Kuakata Beach, Bangladesh

2016 ◽  
Vol 40 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Md Murad Ahmed ◽  
Suranjan Kumar Das ◽  
Sariful ◽  
Selina Yeasmin
Keyword(s):  
Effective Dose ◽  
Annual Effective Dose ◽  
Dose Assessment ◽  
Absorbed Dose Rate ◽  
Radium Equivalent Activity ◽  
Mean Values ◽  
Sediment Samples ◽  
World Average ◽  
Average Value ◽  
Activity Concentrations

The activity concentrations of radionuclides and their respective annual effective dose rates produced by 226Ra, 232Th and 40K were measured by using high purity germanium (HPGe) detector of relative efficiency 20%. The activity concentrations of 226Ra, 232Th and 40K in the sand samples were found to vary from 22.83 ± 4.11 to 100.21 ± 2.39 BqKg-1, 68.76 ± 2.86 BqKg-1 to 297.37 ± 4.32 BqKg-1 and 75.87 ± 15.75 to 161.81 ± 19.90 BqKg-1 with mean values 48.76, 126.11 and 292.38 Bqkg-1, respectively. For sediment samples the corresponding radionuclides ranged between 12.11 ± 1.99 and 31.64 ± 1.64 BqKg-1, 18.94 ± 1.90 BqKg-1 and 71.11 ± 2.88 BqKg-1 and 182.73 ± 19.81 BqKg-1 and 345.77 ± 21.07 BqKg-1, with mean values 19.67, 32.13 and 243.38 Bqkg-1, respectively. The absorbed dose rate was estimated to the range from 30.50 to 242.93 nGyh-1 with an average value of 74.87 nGyh-1. The estimated outdoor annual effective dose varied between 0.22 and 1.79 mSv/year with a mean value of 0.55 mSv/year, which is higher than the world average for outdoor annual effective dose (0.07 mSv/year). The external hazard indices for the samples varied from 0.17 to 1.43 with the average value of 0.44, which is less than the unity. The average value of radium equivalent activity was estimated and found to be 161.40 BqKg-1 which is less than the acceptable limit of world average value of 370 BqKg-1.Journal of Bangladesh Academy of Sciences, Vol. 40, No. 1, 45-55, 2016

scholarly journals Activity concentrations of 137Cs and 40K in mosses from spas in Eastern Serbia

2012 ◽  
Vol 64 (3) ◽  
pp. 917-925 ◽  
Author(s):  
Ana Cuculovic ◽  
R. Cuculovic ◽  
M. Sabovljevic ◽  
D. Veselinovic
Keyword(s):  
Measurement Error ◽  
Chernobyl Accident ◽  
Activity Concentrations ◽  
Average Activity

With the aim of detecting the presence of radionuclides in moss samples in eastern Serbia, 129 samples of mosses were collected from 2000 to 2010 in the region of the spas: Sokobanja, Banja Josanica and Gamzigradska banja. The data obtained show that 137Cs was present in all of the 129 samples from 3 sampling areas and 15 sampling localities and in 20 moss taxa. This indicates that pollution with this radionuclide resulting from the Chernobyl accident still exists. Changes in the average activity concentrations of 40K are within measurement error limits, while for 137Cs changes in the average activity concentrations are more noticeable, i.e. they have decreased with time.

scholarly journals Radiocesium in lichens and reindeer after the Chernobyl accident

Rangifer ◽  
1990 ◽  
Vol 10 (3) ◽  
pp. 55 ◽  
Author(s):  
K. Rissanen ◽  
T. Rahola
Keyword(s):  
Nuclear Weapons ◽  
Chernobyl Accident ◽  
Global Fallout ◽  
Nuclear Safety ◽  
Fresh Weight ◽  
Deposition Pattern ◽  
Green Plants ◽  
Activity Concentrations ◽  
The Mean ◽  
Mean Concentration

After the Chernobyl accident the sampling and measuring program of the Finnish Centre for Radiation and Nuclear Safety was intensified both for surveillance and research purposes. The deposition pattern of radionuclides was more complicated than from the global fallout after the nuclear weapons tests. The radioactive deposition was very unevenly distributed in Lapland, as also in the rest of Finland. Fortunately, the amounts of deposition in Lapland were only about one-tenth of the corresponding amount of deposition in southern Finland. In 1986-87 the mean concentration of Cs-137 in lichens and in reindeer meat increased to about the same level as in 1972-73 or to about 30 per cent of the maximum levels found in 1964-65 after the nuclear weapons tests. The activity concentrations in reindeer tissues vary according to season. In winter, reindeer eat considerable amounts of lichens with high radiocesium concentrations. In summer, lichens are replaced by other forage such as leaves from trees, green plants, etc. The ratio of Cs-137 concentration in reindeer meat between summer and winter is about 0.2. The mean concentration of Cs-137 in meat for consumption from the slaughtering period 1986-87 was 720 Bq/kg fresh weight. After that time concentrations started decreasing since no new fallout was deposited.

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