Assessment of natural radioactivity in rice and their associated population dose estimation

Nahar, Ashikun; Asaduzzaman, Khandoker; Islam, M.M.; Rahman, Md. Mahmudur; Begum, Mahbuba

doi:10.1080/10420150.2018.1542696

Cited by 25 publications

(15 citation statements)

References 19 publications

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“…The purpose of calculating the effective dose is to provide an information regarding annual effective dose for the population of the particular area due to consumption of cassava products. Equation ( 3) is used to calculate an individual's annual effective dose due to consuming 226 Ra, 232 Th, and 40 K radionuclides by taking into account the consumption rates of cassava products, the radionuclide concentrations, and the relevant dose conversion factor (Nahar et al, 2018).…”

Section: Annual Effective Dosementioning

confidence: 99%

“…In the radioactive decay chain, 226 Ra( 238 U) and 228 Ra( 232 Th) are amongst the radionuclides observed to be highly radiotoxic; with radium being a carcinogen (Nahar et al, 2018). It has also been observed that successive accumulation of small amounts of environmental radium in the bone tissues can lead to damages in the bone marrow and subsequent carcinogenesis in the bone cells (Janković et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Radiation Dose from Cassava Samples from a Coal Mining Area of Enugu, Enugu State, Nigeria

Amakom

Orji

Okeoma

2023

Preprint

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Cassava is one of the most staple food for the Nigerian population and is consumed in large quantity daily. Food intake is one of the routes of radiological contamination to man. Cassava samples from an old coal mining area of Enugu, Enugu State, Nigeria were analyzed using gamma ray spectroscopic method. The mean activity concentrations for the radionuclides 40K, 226Ra and 232Th respectively ranged from 193.68-300.92 Bq/kg, 23.03-37.24 Bq/kg and 135.33-158.43 for camp 1, camp 2 and Pottery areas respectively. The total mean annual effective dose due to the three observed radionuclides was 2.03 mSv/yr, which was higher than the recommended value of 1 mSv/yr. The cassava samples from the area under study showed high radiotoxicity levels.

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Section: Annual Effective Dosementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radiation Dose from Cassava Samples from a Coal Mining Area of Enugu, Enugu State, Nigeria

Amakom

Orji

Okeoma

2023

Preprint

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“…The daily intake of radionuclides from the activity concentrations of 226 Ra, 232 Th and 40 K due to the consumption of maize meal was calculated from equation 2 (Nahar et al, 2018).…”

Section: Calculation Of Radiobiological Impactmentioning

confidence: 99%

“…Another radiological parameter called the annual committed effective dose (µSv.y -1 ) to an individual from ingestion of radionuclides in maize meal is defined from the following formula (Asaduzzaman et al, 2015;Nahar et al, 2018):…”

Section: Calculation Of Radiobiological Impactmentioning

confidence: 99%

Activity concentrations of 226^Ra, 232^Th, and 40^K in common maize meal consumed in Namibia and their potential radiation hazards

Onjefu

Kafidi

Kamunda

et al. 2021

Nig Ann pure App Sci

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Gamma spectroscopy was performed to determine the concentrations of 40K, 226Ra and 232Th in maize meal samples collected from shop outlets and open markets in Namibia. The activity concentrations and Excess Lifetime Cancer Risk were determined using a high purity germanium (HPGe) detector. The average activity concentrations of 40K, 226Ra and 232Th were found to be 29.98 ± 4.05, 0.99 ± 0.40 and 0.35 ± 0.08 Bq.kg – 1 in the maize meal samples. The result showed the activity concentrations of 40K significantly higher than the other radionuclides in all the maize meal samples. The average excess life cancer risk varies from 1.33 x 10 – 13 to 6.05 x 10 – 13 for 40K, 8.76 x 10 -13 to 1.19 x 10 – 12 for 232Th and 2.43 x 10 -11 to 2.83 x 10 – 11 for 226Ra. Hence, when compared with internationally acceptable limits, all values fall within the safety limits. Thus, the study concludes that the maize meals consumed in Namibia are radiologically safe for consumption.

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“…For 238 U and 226 Ra, the lungs and kidneys are typically the sites of deposition; for 232 Th, the lungs, liver, or bones may all accumulate; and for 40 K, the body as a whole, but mostly in the muscles (Akhter et al, 2007;Nahar et al, 2018;Ugbede et al, 2022). As a result, the immune system of the body may weaken in the face of many illnesses with higher death rates (Nahar et al, 2018;Ugbede et al, 2022). The amount of exposure to radiation depends on the intake of radionuclides, and its significance depends in turn on other variables such as the age, metabolic kinetics, and weight of the individual who ingests them (also known as the dose conversion factor) (WHO, 2007).…”

Section: Introductionmentioning

confidence: 99%

Examination of Medicinal Plants for Radionuclides Absorption and Their Health Implications

Popoola,

Isola,

Fakeye

et al. 2023

Preprint

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This study tests the concentration of 40K, 238U, and 232Th radionuclides and also evaluates the possible radiological health risks in medicinal plants found in Ewu, Edo State, Nigeria, using a NaI(Tl) gamma spectrometer. The six selected medicinal plants are Magnifera indica, Dacryodes edulis, Terminalia catappa, Cymbopogon citratus, Anacardium occidentale, and Persea Americana. The results showed that the activity concentrations for 40K ranged from 146.59 ± 4.81 in Persea americana to 296.08 3.42 Bq/kg in Cymbopogon citratus with a mean of 209.43 ± 5.14 Bq/kg, 238U ranged from 2.25 ± 0.06 to 5.57 ± 0.15 Bq/kg with a mean of 4.73 ± 0.15 Bq/kg and 232Th varied from 4.50 ± 0.35 to 12.07 ± 0.57 Bq/kg with a mean of 8.00 ± 0.40 Bq/kg. The maximum and minimum activity concentrations of both 238U and 232Th were found in Magnifera indica and Cymbopogon citratus respectively. The calculated radiological hazards assessment due to the investigated medicinal plants is well within the internationally recommended safe limits. 232Th contributes 54.91% to the total ECED , while 6.35% for 238U is the least. 232Th exhibit a very strong, positive, and significant relationship with (ECED and ELCR), and it contributes largely to the ECED and ELCR due to ingestion of the examined herbal plant. Therefore, the use of these medicinal plants is radiologically safe for human consumption.

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Assessment of natural radioactivity in rice and their associated population dose estimation

Cited by 25 publications

References 19 publications

Radiation Dose from Cassava Samples from a Coal Mining Area of Enugu, Enugu State, Nigeria

Radiation Dose from Cassava Samples from a Coal Mining Area of Enugu, Enugu State, Nigeria

Activity concentrations of 226^Ra, 232^Th, and 40^K in common maize meal consumed in Namibia and their potential radiation hazards

Examination of Medicinal Plants for Radionuclides Absorption and Their Health Implications

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